72715072 has 28 divisors (see below), whose sum is σ = 144580356. Its totient is φ = 36285440.

The previous prime is 72715039. The next prime is 72715127. The reversal of 72715072 is 27051727.

It can be written as a sum of positive squares in 2 ways, for example, as 25160256 + 47554816 = 5016^2 + 6896^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47958 + ... + 49450.

Almost surely, 2^72715072 is an apocalyptic number.

It is an amenable number.

72715072 is a deficient number, since it is larger than the sum of its proper divisors (71865284).

72715072 is a wasteful number, since it uses less digits than its factorization.

72715072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266 (or 2256 counting only the distinct ones).

The product of its (nonzero) digits is 6860, while the sum is 31.

The square root of 72715072 is about 8527.3132931774. The cubic root of 72715072 is about 417.3894614552.

Adding to 72715072 its reverse (27051727), we get a palindrome (99766799).

The spelling of 72715072 in words is "seventy-two million, seven hundred fifteen thousand, seventy-two".