72871755 has 16 divisors (see below), whose sum is σ = 127194624. Its totient is φ = 35331680.

The previous prime is 72871709. The next prime is 72871769. The reversal of 72871755 is 55717827.

It is not a de Polignac number, because 72871755 - 2⁶ = 72871691 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220659 + ... + 220988.

It is an arithmetic number, because the mean of its divisors is an integer number (7949664).

Almost surely, 2^72871755 is an apocalyptic number.

72871755 is a deficient number, since it is larger than the sum of its proper divisors (54322869).

72871755 is a wasteful number, since it uses less digits than its factorization.

72871755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441666.

The product of its digits is 137200, while the sum is 42.

The square root of 72871755 is about 8536.4954753107. The cubic root of 72871755 is about 417.6890367486.

The spelling of 72871755 in words is "seventy-two million, eight hundred seventy-one thousand, seven hundred fifty-five".