72256183 has 4 divisors (see below), whose sum is σ = 76059160. Its totient is φ = 68453208.

The previous prime is 72256181. The next prime is 72256187. The reversal of 72256183 is 38165227.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72256183 - 2¹ = 72256181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72256181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1901460 + ... + 1901497.

It is an arithmetic number, because the mean of its divisors is an integer number (19014790).

Almost surely, 2^72256183 is an apocalyptic number.

72256183 is a deficient number, since it is larger than the sum of its proper divisors (3802977).

72256183 is a wasteful number, since it uses less digits than its factorization.

72256183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3802976.

The product of its digits is 20160, while the sum is 34.

The square root of 72256183 is about 8500.3636981014. The cubic root of 72256183 is about 416.5095899298.

The spelling of 72256183 in words is "seventy-two million, two hundred fifty-six thousand, one hundred eighty-three".