72999245 has 16 divisors (see below), whose sum is σ = 96076800. Its totient is φ = 52804800.

The previous prime is 72999233. The next prime is 72999257. The reversal of 72999245 is 54299927.

It is an interprime number because it is at equal distance from previous prime (72999233) and next prime (72999257).

It is not a de Polignac number, because 72999245 - 2⁶ = 72999181 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72999245.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 7031 + ... + 13979.

It is an arithmetic number, because the mean of its divisors is an integer number (6004800).

Almost surely, 2^72999245 is an apocalyptic number.

It is an amenable number.

72999245 is a deficient number, since it is larger than the sum of its proper divisors (23077555).

72999245 is a wasteful number, since it uses less digits than its factorization.

72999245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7156.

The product of its digits is 408240, while the sum is 47.

The square root of 72999245 is about 8543.9595621702. The cubic root of 72999245 is about 417.9324788107.

It can be divided in two parts, 729992 and 45, that added together give a palindrome (730037).

The spelling of 72999245 in words is "seventy-two million, nine hundred ninety-nine thousand, two hundred forty-five".