72522380 has 24 divisors (see below), whose sum is σ = 174054048. Its totient is φ = 24864768.

The previous prime is 72522377. The next prime is 72522397. The reversal of 72522380 is 8322527.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 258869 + ... + 259148.

It is an arithmetic number, because the mean of its divisors is an integer number (7252252).

Almost surely, 2^72522380 is an apocalyptic number.

72522380 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

72522380 is an abundant number, since it is smaller than the sum of its proper divisors (101531668).

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

72522380 is a wasteful number, since it uses less digits than its factorization.

72522380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518033 (or 518031 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 72522380 is about 8516.0072804102. The cubic root of 72522380 is about 417.0204469077.

The spelling of 72522380 in words is "seventy-two million, five hundred twenty-two thousand, three hundred eighty".