72256934 has 4 divisors (see below), whose sum is σ = 108385404. Its totient is φ = 36128466.

The previous prime is 72256927. The next prime is 72256937. The reversal of 72256934 is 43965227.

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

It is a super-2 number, since 2×72256934² = 10442129022160712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72256937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18064232 + ... + 18064235.

It is an arithmetic number, because the mean of its divisors is an integer number (27096351).

Almost surely, 2^72256934 is an apocalyptic number.

72256934 is a deficient number, since it is larger than the sum of its proper divisors (36128470).

72256934 is a wasteful number, since it uses less digits than its factorization.

72256934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36128469.

The product of its digits is 90720, while the sum is 38.

The square root of 72256934 is about 8500.4078725671. The cubic root of 72256934 is about 416.5110329326.

The spelling of 72256934 in words is "seventy-two million, two hundred fifty-six thousand, nine hundred thirty-four".