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72079896 = 2337487881
BaseRepresentation
bin1000100101111…
…01101000011000
312000122001000210
410102331220120
5121423024041
611052531120
71533445320
oct422755030
9160561023
1072079896
1137761769
1220180aa0
1311c19435
149804280
1564dc016
hex44bda18

72079896 has 64 divisors (see below), whose sum is σ = 206599680. Its totient is φ = 20528640.

The previous prime is 72079879. The next prime is 72079897. The reversal of 72079896 is 69897027.

It is a super-2 number, since 2×720798962 = 10391022814741632, which contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72079897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81376 + ... + 82256.

It is an arithmetic number, because the mean of its divisors is an integer number (3228120).

Almost surely, 272079896 is an apocalyptic number.

It is an amenable number.

72079896 is an abundant number, since it is smaller than the sum of its proper divisors (134519784).

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

72079896 is a wasteful number, since it uses less digits than its factorization.

72079896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384 (or 1380 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 72079896 is about 8489.9879858572. The cubic root of 72079896 is about 416.1705877058.

The spelling of 72079896 in words is "seventy-two million, seventy-nine thousand, eight hundred ninety-six".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 42 56 84 168 487 881 974 1461 1762 1948 2643 2922 3409 3524 3896 5286 5844 6167 6818 7048 10227 10572 11688 12334 13636 18501 20454 21144 24668 27272 37002 40908 49336 74004 81816 148008 429047 858094 1287141 1716188 2574282 3003329 3432376 5148564 6006658 9009987 10297128 12013316 18019974 24026632 36039948 72079896