72450860 has 24 divisors (see below), whose sum is σ = 153313776. Its totient is φ = 28758080.

The previous prime is 72450853. The next prime is 72450863. The reversal of 72450860 is 6805427.

It is a super-2 number, since 2×72450860² = 10498254229479200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72450863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11207 + ... + 16446.

It is an arithmetic number, because the mean of its divisors is an integer number (6388074).

Almost surely, 2^72450860 is an apocalyptic number.

It is an amenable number.

72450860 is an abundant number, since it is smaller than the sum of its proper divisors (80862916).

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

72450860 is a wasteful number, since it uses less digits than its factorization.

72450860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27793 (or 27791 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 72450860 is about 8511.8070936788. The cubic root of 72450860 is about 416.8833163093.

The spelling of 72450860 in words is "seventy-two million, four hundred fifty thousand, eight hundred sixty".