72050520 has 32 divisors (see below), whose sum is σ = 216151920. Its totient is φ = 19213440.

The previous prime is 72050509. The next prime is 72050551. The reversal of 72050520 is 2505027.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300091 + ... + 300330.

Almost surely, 2^72050520 is an apocalyptic number.

It is an amenable number.

72050520 is an abundant number, since it is smaller than the sum of its proper divisors (144101400).

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

72050520 is a wasteful number, since it uses less digits than its factorization.

72050520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600435 (or 600431 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 21.

The square root of 72050520 is about 8488.2577717692. The cubic root of 72050520 is about 416.1140435603.

Adding to 72050520 its reverse (2505027), we get a palindrome (74555547).

The spelling of 72050520 in words is "seventy-two million, fifty thousand, five hundred twenty".