72998 has 16 divisors (see below), whose sum is σ = 123120. Its totient is φ = 32256.

The previous prime is 72997. The next prime is 73009. The reversal of 72998 is 89927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 590 + ... + 702.

It is an arithmetic number, because the mean of its divisors is an integer number (7695).

2⁷²⁹⁹⁸ is an apocalyptic number.

72998 is a deficient number, since it is larger than the sum of its proper divisors (50122).

72998 is a wasteful number, since it uses less digits than its factorization.

72998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151.

The product of its digits is 9072, while the sum is 35.

The square root of 72998 is about 270.1814205307. The cubic root of 72998 is about 41.7930102855.

Multiplying 72998 by its sum of digits (35), we get a triangular number (2554930 = T₂₂₆₀).

The spelling of 72998 in words is "seventy-two thousand, nine hundred ninety-eight".