72379520 has 32 divisors (see below), whose sum is σ = 173033820. Its totient is φ = 28951552.

The previous prime is 72379519. The next prime is 72379537. The reversal of 72379520 is 2597327.

It can be written as a sum of positive squares in 2 ways, for example, as 72318016 + 61504 = 8504^2 + 248^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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, 55907 + ... + 57186.

Almost surely, 2^72379520 is an apocalyptic number.

It is an amenable number.

72379520 is an abundant number, since it is smaller than the sum of its proper divisors (100654300).

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

72379520 is a wasteful number, since it uses less digits than its factorization.

72379520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113112 (or 113100 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 72379520 is about 8507.6154120882. The cubic root of 72379520 is about 416.7464409034.

The spelling of 72379520 in words is "seventy-two million, three hundred seventy-nine thousand, five hundred twenty".