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72487080 = 23325271743
BaseRepresentation
bin1000101001000…
…01000010101000
312001101201120200
410110201002220
5122024041310
611105352200
71540062411
oct424410250
9161351520
1072487080
1137a0a686
1220338660
131202c883
1498ac808
15656c9c0
hex45210a8

72487080 has 96 divisors (see below), whose sum is σ = 236770560. Its totient is φ = 19232640.

The previous prime is 72487073. The next prime is 72487081. The reversal of 72487080 is 8078427.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (72487081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97189 + ... + 97931.

It is an arithmetic number, because the mean of its divisors is an integer number (2466360).

Almost surely, 272487080 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 72487080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118385280).

72487080 is an abundant number, since it is smaller than the sum of its proper divisors (164283480).

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

72487080 is a wasteful number, since it uses less digits than its factorization.

72487080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031 (or 1024 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 72487080 is about 8513.9344606357. The cubic root of 72487080 is about 416.9527748738.

The spelling of 72487080 in words is "seventy-two million, four hundred eighty-seven thousand, eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 90 120 180 271 360 542 743 813 1084 1355 1486 1626 2168 2229 2439 2710 2972 3252 3715 4065 4458 4878 5420 5944 6504 6687 7430 8130 8916 9756 10840 11145 12195 13374 14860 16260 17832 19512 22290 24390 26748 29720 32520 33435 44580 48780 53496 66870 89160 97560 133740 201353 267480 402706 604059 805412 1006765 1208118 1610824 1812177 2013530 2416236 3020295 3624354 4027060 4832472 6040590 7248708 8054120 9060885 12081180 14497416 18121770 24162360 36243540 72487080