72725740 has 24 divisors (see below), whose sum is σ = 153614160. Its totient is φ = 28920768.

The previous prime is 72725717. The next prime is 72725743. The reversal of 72725740 is 4752727.

It is a junction number, because it is equal to n+sod(n) for n = 72725696 and 72725705.

It is not an unprimeable number, because it can be changed into a prime (72725743) 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, 7050 + ... + 13969.

It is an arithmetic number, because the mean of its divisors is an integer number (6400590).

Almost surely, 2^72725740 is an apocalyptic number.

It is an amenable number.

72725740 is an abundant number, since it is smaller than the sum of its proper divisors (80888420).

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

72725740 is a wasteful number, since it uses less digits than its factorization.

72725740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21201 (or 21199 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 34.

The square root of 72725740 is about 8527.9387896490. The cubic root of 72725740 is about 417.4098721391.

The spelling of 72725740 in words is "seventy-two million, seven hundred twenty-five thousand, seven hundred forty".