72569440 has 24 divisors (see below), whose sum is σ = 171445680. Its totient is φ = 29027712.

The previous prime is 72569437. The next prime is 72569459. The reversal of 72569440 is 4496527.

It is a self number, because there is not a number n which added to its sum of digits gives 72569440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226620 + ... + 226939.

It is an arithmetic number, because the mean of its divisors is an integer number (7143570).

Almost surely, 2^72569440 is an apocalyptic number.

It is an amenable number.

72569440 is an abundant number, since it is smaller than the sum of its proper divisors (98876240).

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

72569440 is a wasteful number, since it uses less digits than its factorization.

72569440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453574 (or 453566 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 72569440 is about 8518.7698642468. The cubic root of 72569440 is about 417.1106293629.

The spelling of 72569440 in words is "seventy-two million, five hundred sixty-nine thousand, four hundred forty".