72998289 has 96 divisors (see below), whose sum is σ = 141523200. Its totient is φ = 35900928.

The previous prime is 72998287. The next prime is 72998311. The reversal of 72998289 is 98289927.

It is not a de Polignac number, because 72998289 - 2¹ = 72998287 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72998287) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 682174 + ... + 682280.

It is an arithmetic number, because the mean of its divisors is an integer number (1474200).

Almost surely, 2^72998289 is an apocalyptic number.

It is an amenable number.

72998289 is a deficient number, since it is larger than the sum of its proper divisors (68524911).

72998289 is a wasteful number, since it uses less digits than its factorization.

72998289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 147 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 72998289 is about 8543.9036160294. The cubic root of 72998289 is about 417.9306543846.

The spelling of 72998289 in words is "seventy-two million, nine hundred ninety-eight thousand, two hundred eighty-nine".