72999982 has 16 divisors (see below), whose sum is σ = 122234112. Its totient is φ = 32409720.

The previous prime is 72999973. The next prime is 72999991. The reversal of 72999982 is 28999927.

It is an interprime number because it is at equal distance from previous prime (72999973) and next prime (72999991).

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 7 ways as a sum of consecutive naturals, for example, 37638 + ... + 39529.

It is an arithmetic number, because the mean of its divisors is an integer number (7639632).

Almost surely, 2^72999982 is an apocalyptic number.

72999982 is a deficient number, since it is larger than the sum of its proper divisors (49234130).

72999982 is a wasteful number, since it uses less digits than its factorization.

72999982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77223.

The product of its digits is 1469664, while the sum is 55.

The square root of 72999982 is about 8544.0026919471. The cubic root of 72999982 is about 417.9338852874.

Adding to 72999982 its sum of digits (55), we get a palindrome (73000037).

Subtracting from 72999982 its sum of digits (55), we obtain a palindrome (72999927).

The spelling of 72999982 in words is "seventy-two million, nine hundred ninety-nine thousand, nine hundred eighty-two".