72258706 has 32 divisors (see below), whose sum is σ = 123798528. Its totient is φ = 31389120.

The previous prime is 72258701. The next prime is 72258713. The reversal of 72258706 is 60785227.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (72258701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28611 + ... + 31033.

It is an arithmetic number, because the mean of its divisors is an integer number (3868704).

Almost surely, 2^72258706 is an apocalyptic number.

72258706 is a deficient number, since it is larger than the sum of its proper divisors (51539822).

72258706 is a wasteful number, since it uses less digits than its factorization.

72258706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 72258706 is about 8500.5121022207. The cubic root of 72258706 is about 416.5144376878.

It can be divided in two parts, 7225 and 8706, that added together give a triangular number (15931 = T₁₇₈).

The spelling of 72258706 in words is "seventy-two million, two hundred fifty-eight thousand, seven hundred six".