72998735 has 16 divisors (see below), whose sum is σ = 90228864. Its totient is φ = 56663712.

The previous prime is 72998719. The next prime is 72998747. The reversal of 72998735 is 53789927.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 72998735 - 2⁴ = 72998719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34004 + ... + 36086.

It is an arithmetic number, because the mean of its divisors is an integer number (5639304).

Almost surely, 2^72998735 is an apocalyptic number.

72998735 is a deficient number, since it is larger than the sum of its proper divisors (17230129).

72998735 is a wasteful number, since it uses less digits than its factorization.

72998735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294.

The product of its digits is 952560, while the sum is 50.

The square root of 72998735 is about 8543.9297164712. The cubic root of 72998735 is about 417.9315055310.

The spelling of 72998735 in words is "seventy-two million, nine hundred ninety-eight thousand, seven hundred thirty-five".