72697052 has 12 divisors (see below), whose sum is σ = 127543080. Its totient is φ = 36256176.

The previous prime is 72697039. The next prime is 72697057. The reversal of 72697052 is 25079627.

It is a super-2 number, since 2×72697052² = 10569722738981408, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72696997 and 72697015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72697057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21302 + ... + 24477.

It is an arithmetic number, because the mean of its divisors is an integer number (10628590).

Almost surely, 2^72697052 is an apocalyptic number.

It is an amenable number.

72697052 is a deficient number, since it is larger than the sum of its proper divisors (54846028).

72697052 is a wasteful number, since it uses less digits than its factorization.

72697052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46180 (or 46178 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 72697052 is about 8526.2566229266. The cubic root of 72697052 is about 417.3549799313.

The spelling of 72697052 in words is "seventy-two million, six hundred ninety-seven thousand, fifty-two".