72550996 has 24 divisors (see below), whose sum is σ = 145454400. Its totient is φ = 31017792.

The previous prime is 72550991. The next prime is 72550997. The reversal of 72550996 is 69905527.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72550991) 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, 9480 + ... + 15328.

It is an arithmetic number, because the mean of its divisors is an integer number (6060600).

Almost surely, 2^72550996 is an apocalyptic number.

It is an amenable number.

72550996 is an abundant number, since it is smaller than the sum of its proper divisors (72903404).

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

72550996 is a wasteful number, since it uses less digits than its factorization.

72550996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6303 (or 6301 counting only the distinct ones).

The product of its (nonzero) digits is 170100, while the sum is 43.

The square root of 72550996 is about 8517.6872447866. The cubic root of 72550996 is about 417.0752892330.

The spelling of 72550996 in words is "seventy-two million, five hundred fifty thousand, nine hundred ninety-six".