72900245 has 16 divisors (see below), whose sum is σ = 100457280. Its totient is φ = 50227200.

The previous prime is 72900241. The next prime is 72900257. The reversal of 72900245 is 54200927.

It is not a de Polignac number, because 72900245 - 2² = 72900241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72900241) 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 in 15 ways as a sum of consecutive naturals, for example, 33836 + ... + 35925.

It is an arithmetic number, because the mean of its divisors is an integer number (6278580).

Almost surely, 2^72900245 is an apocalyptic number.

It is an amenable number.

72900245 is a deficient number, since it is larger than the sum of its proper divisors (27557035).

72900245 is a wasteful number, since it uses less digits than its factorization.

72900245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69796.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 72900245 is about 8538.1640298134. The cubic root of 72900245 is about 417.7434630037.

The spelling of 72900245 in words is "seventy-two million, nine hundred thousand, two hundred forty-five".