72950420 has 24 divisors (see below), whose sum is σ = 153511848. Its totient is φ = 29120000.

The previous prime is 72950401. The next prime is 72950429. The reversal of 72950420 is 2405927.

It can be written as a sum of positive squares in 4 ways, for example, as 2155024 + 70795396 = 1468^2 + 8414^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72950429) 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, 6920 + ... + 13920.

It is an arithmetic number, because the mean of its divisors is an integer number (6396327).

Almost surely, 2^72950420 is an apocalyptic number.

It is an amenable number.

72950420 is an abundant number, since it is smaller than the sum of its proper divisors (80561428).

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

72950420 is a wasteful number, since it uses less digits than its factorization.

72950420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7531 (or 7529 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 72950420 is about 8541.1018024609. The cubic root of 72950420 is about 417.8392810234.

The spelling of 72950420 in words is "seventy-two million, nine hundred fifty thousand, four hundred twenty".