72872755 has 16 divisors (see below), whose sum is σ = 89540640. Its totient is φ = 56919808.

The previous prime is 72872753. The next prime is 72872777. The reversal of 72872755 is 55727827.

It is a cyclic number.

It is not a de Polignac number, because 72872755 - 2¹ = 72872753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72872753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35949 + ... + 37921.

It is an arithmetic number, because the mean of its divisors is an integer number (5596290).

Almost surely, 2^72872755 is an apocalyptic number.

72872755 is a deficient number, since it is larger than the sum of its proper divisors (16667885).

72872755 is a wasteful number, since it uses less digits than its factorization.

72872755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150.

The product of its digits is 274400, while the sum is 43.

The square root of 72872755 is about 8536.5540471551. The cubic root of 72872755 is about 417.6909473523.

The spelling of 72872755 in words is "seventy-two million, eight hundred seventy-two thousand, seven hundred fifty-five".