72636250 has 20 divisors (see below), whose sum is σ = 136151730. Its totient is φ = 29054000.

The previous prime is 72636247. The next prime is 72636269. The reversal of 72636250 is 5263627.

It can be written as a sum of positive squares in 5 ways, for example, as 335241 + 72301009 = 579^2 + 8503^2 .

It is an unprimeable number.

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 in 9 ways as a sum of consecutive naturals, for example, 27805 + ... + 30304.

Almost surely, 2^72636250 is an apocalyptic number.

72636250 is a deficient number, since it is larger than the sum of its proper divisors (63515480).

72636250 is an equidigital number, since it uses as much as digits as its factorization.

72636250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58131 (or 58116 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 72636250 is about 8522.6903029501. The cubic root of 72636250 is about 417.2385923809.

Adding to 72636250 its reverse (5263627), we get a palindrome (77899877).

The spelling of 72636250 in words is "seventy-two million, six hundred thirty-six thousand, two hundred fifty".