72043566 has 32 divisors (see below), whose sum is σ = 169986048. Its totient is φ = 19919520.

The previous prime is 72043541. The next prime is 72043577. The reversal of 72043566 is 66534027.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26365 + ... + 28968.

It is an arithmetic number, because the mean of its divisors is an integer number (5312064).

Almost surely, 2^72043566 is an apocalyptic number.

72043566 is an abundant number, since it is smaller than the sum of its proper divisors (97942482).

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

72043566 is a wasteful number, since it uses less digits than its factorization.

72043566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55376.

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 72043566 is about 8487.8481371900. The cubic root of 72043566 is about 416.1006559625.

The spelling of 72043566 in words is "seventy-two million, forty-three thousand, five hundred sixty-six".