72918934 has 32 divisors (see below), whose sum is σ = 126813600. Its totient is φ = 31127040.

The previous prime is 72918931. The next prime is 72918977. The reversal of 72918934 is 43981927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72918931) 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 15 ways as a sum of consecutive naturals, for example, 22062 + ... + 25150.

It is an arithmetic number, because the mean of its divisors is an integer number (3962925).

Almost surely, 2^72918934 is an apocalyptic number.

72918934 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

72918934 is a deficient number, since it is larger than the sum of its proper divisors (53894666).

72918934 is a wasteful number, since it uses less digits than its factorization.

72918934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3168.

The product of its digits is 108864, while the sum is 43.

The square root of 72918934 is about 8539.2583987136. The cubic root of 72918934 is about 417.7791580850.

The spelling of 72918934 in words is "seventy-two million, nine hundred eighteen thousand, nine hundred thirty-four".