73978814 has 32 divisors (see below), whose sum is σ = 137120256. Its totient is φ = 29149920.

The previous prime is 73978783. The next prime is 73978841. The reversal of 73978814 is 41887937.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55949 + ... + 57255.

It is an arithmetic number, because the mean of its divisors is an integer number (4285008).

Almost surely, 2^73978814 is an apocalyptic number.

73978814 is a deficient number, since it is larger than the sum of its proper divisors (63141442).

73978814 is a wasteful number, since it uses less digits than its factorization.

73978814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640.

The product of its digits is 338688, while the sum is 47.

The square root of 73978814 is about 8601.0937676554. The cubic root of 73978814 is about 419.7935758107.

The spelling of 73978814 in words is "seventy-three million, nine hundred seventy-eight thousand, eight hundred fourteen".