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72060144 = 24313176793
BaseRepresentation
bin1000100101110…
…00110011110000
312000121000221020
410102320303300
5121421411034
611052255440
71533333612
oct422706360
9160530836
1072060144
1137748942
1220171580
1311c10450
1497dadb2
1564d6249
hex44b8cf0

72060144 has 80 divisors (see below), whose sum is σ = 212298912. Its totient is φ = 20865024.

The previous prime is 72060133. The next prime is 72060187. The reversal of 72060144 is 44106027.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7212 + ... + 14004.

Almost surely, 272060144 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 72060144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106149456).

72060144 is an abundant number, since it is smaller than the sum of its proper divisors (140238768).

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

72060144 is a wasteful number, since it uses less digits than its factorization.

72060144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6834 (or 6828 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 72060144 is about 8488.8246536255. The cubic root of 72060144 is about 416.1325699279.

The spelling of 72060144 in words is "seventy-two million, sixty thousand, one hundred forty-four".

Divisors: 1 2 3 4 6 8 12 13 16 17 24 26 34 39 48 51 52 68 78 102 104 136 156 204 208 221 272 312 408 442 624 663 816 884 1326 1768 2652 3536 5304 6793 10608 13586 20379 27172 40758 54344 81516 88309 108688 115481 163032 176618 230962 264927 326064 346443 353236 461924 529854 692886 706472 923848 1059708 1385772 1412944 1501253 1847696 2119416 2771544 3002506 4238832 4503759 5543088 6005012 9007518 12010024 18015036 24020048 36030072 72060144