72520460 has 24 divisors (see below), whose sum is σ = 154792176. Its totient is φ = 28532160.

The previous prime is 72520447. The next prime is 72520471. The reversal of 72520460 is 6402527.

It is a super-2 number, since 2×72520460² = 10518434237223200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28502 + ... + 30941.

It is an arithmetic number, because the mean of its divisors is an integer number (6449674).

Almost surely, 2^72520460 is an apocalyptic number.

It is an amenable number.

72520460 is an abundant number, since it is smaller than the sum of its proper divisors (82271716).

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

72520460 is a wasteful number, since it uses less digits than its factorization.

72520460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59513 (or 59511 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 72520460 is about 8515.8945507797. The cubic root of 72520460 is about 417.0167667273.

Adding to 72520460 its reverse (6402527), we get a palindrome (78922987).

The spelling of 72520460 in words is "seventy-two million, five hundred twenty thousand, four hundred sixty".