72178982 has 16 divisors (see below), whose sum is σ = 111451200. Its totient is φ = 35043840.

The previous prime is 72178949. The next prime is 72178987. The reversal of 72178982 is 28987127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72178987) 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 7 ways as a sum of consecutive naturals, for example, 5894 + ... + 13382.

It is an arithmetic number, because the mean of its divisors is an integer number (6965700).

Almost surely, 2^72178982 is an apocalyptic number.

72178982 is a deficient number, since it is larger than the sum of its proper divisors (39272218).

72178982 is a wasteful number, since it uses less digits than its factorization.

72178982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7631.

The product of its digits is 112896, while the sum is 44.

The square root of 72178982 is about 8495.8214435097. The cubic root of 72178982 is about 416.3611993278.

The spelling of 72178982 in words is "seventy-two million, one hundred seventy-eight thousand, nine hundred eighty-two".