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72883488 = 2531723771
BaseRepresentation
bin1000101100000…
…01110100100000
312002010212100110
410112001310200
5122124232423
611122051320
71543333206
oct426016440
9162125313
1072883488
1138160497
12204a9b40
131213b132
149973076
1565ea193
hex4581d20

72883488 has 144 divisors (see below), whose sum is σ = 211667904. Its totient is φ = 21934080.

The previous prime is 72883477. The next prime is 72883493. The reversal of 72883488 is 88438827.

It is a super-2 number, since 2×728834882 = 10624005646092288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1026493 + ... + 1026563.

It is an arithmetic number, because the mean of its divisors is an integer number (1469916).

Almost surely, 272883488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72883488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105833952).

72883488 is an abundant number, since it is smaller than the sum of its proper divisors (138784416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72883488 is a wasteful number, since it uses less digits than its factorization.

72883488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 130 counting only the distinct ones).

The product of its digits is 688128, while the sum is 48.

The square root of 72883488 is about 8537.1826734585. The cubic root of 72883488 is about 417.7114527609.

The spelling of 72883488 in words is "seventy-two million, eight hundred eighty-three thousand, four hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 16 17 24 32 34 37 48 51 68 71 74 96 102 111 136 142 148 204 213 222 272 284 289 296 408 426 444 544 568 578 592 629 816 852 867 888 1136 1156 1184 1207 1258 1632 1704 1734 1776 1887 2272 2312 2414 2516 2627 3408 3468 3552 3621 3774 4624 4828 5032 5254 6816 6936 7242 7548 7881 9248 9656 10064 10508 10693 13872 14484 15096 15762 19312 20128 20519 21016 21386 27744 28968 30192 31524 32079 38624 41038 42032 42772 44659 57936 60384 61557 63048 64158 82076 84064 85544 89318 115872 123114 126096 128316 133977 164152 171088 178636 246228 252192 256632 267954 328304 342176 357272 492456 513264 535908 656608 714544 759203 984912 1026528 1071816 1429088 1518406 1969824 2143632 2277609 3036812 4287264 4555218 6073624 9110436 12147248 18220872 24294496 36441744 72883488