72040764 has 36 divisors (see below), whose sum is σ = 178573304. Its totient is φ = 22599936.

The previous prime is 72040757. The next prime is 72040769. The reversal of 72040764 is 46704027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72040769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6919 + ... + 13854.

Almost surely, 2^72040764 is an apocalyptic number.

It is an amenable number.

72040764 is an abundant number, since it is smaller than the sum of its proper divisors (106532540).

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

72040764 is a wasteful number, since it uses less digits than its factorization.

72040764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20814 (or 20795 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 72040764 is about 8487.6830760815. The cubic root of 72040764 is about 416.0952614065.

The spelling of 72040764 in words is "seventy-two million, forty thousand, seven hundred sixty-four".