72283855 has 16 divisors (see below), whose sum is σ = 100099584. Its totient is φ = 49082400.

The previous prime is 72283843. The next prime is 72283873. The reversal of 72283855 is 55838227.

It is not a de Polignac number, because 72283855 - 2¹⁵ = 72251087 is a prime.

It is a super-2 number, since 2×72283855² = 10449911387322050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 6421 + ... + 13630.

It is an arithmetic number, because the mean of its divisors is an integer number (6256224).

Almost surely, 2^72283855 is an apocalyptic number.

72283855 is a deficient number, since it is larger than the sum of its proper divisors (27815729).

72283855 is a wasteful number, since it uses less digits than its factorization.

72283855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20166.

The product of its digits is 134400, while the sum is 40.

The square root of 72283855 is about 8501.9912373514. The cubic root of 72283855 is about 416.5627534648.

The spelling of 72283855 in words is "seventy-two million, two hundred eighty-three thousand, eight hundred fifty-five".