72057258 has 48 divisors (see below), whose sum is σ = 192157056. Its totient is φ = 19003680.

The previous prime is 72057221. The next prime is 72057269. The reversal of 72057258 is 85275027.

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 23 ways as a sum of consecutive naturals, for example, 20358 + ... + 23633.

It is an arithmetic number, because the mean of its divisors is an integer number (4003272).

Almost surely, 2^72057258 is an apocalyptic number.

72057258 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

72057258 is an abundant number, since it is smaller than the sum of its proper divisors (120099798).

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

72057258 is a wasteful number, since it uses less digits than its factorization.

72057258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44019 (or 44016 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 72057258 is about 8488.6546637262. The cubic root of 72057258 is about 416.1270145008.

The spelling of 72057258 in words is "seventy-two million, fifty-seven thousand, two hundred fifty-eight".