72265040 has 40 divisors (see below), whose sum is σ = 168465408. Its totient is φ = 28828800.

The previous prime is 72265027. The next prime is 72265049. The reversal of 72265040 is 4056227.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72265049) 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, 36065 + ... + 38015.

Almost surely, 2^72265040 is an apocalyptic number.

It is an amenable number.

72265040 is an abundant number, since it is smaller than the sum of its proper divisors (96200368).

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

72265040 is a wasteful number, since it uses less digits than its factorization.

72265040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2427 (or 2421 counting only the distinct ones).

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

The square root of 72265040 is about 8500.8846598457. The cubic root of 72265040 is about 416.5266075033.

The spelling of 72265040 in words is "seventy-two million, two hundred sixty-five thousand, forty".