73023978 has 16 divisors (see below), whose sum is σ = 146688480. Its totient is φ = 24234576.

The previous prime is 73023961. The next prime is 73023989. The reversal of 73023978 is 87932037.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25200 + ... + 27947.

It is an arithmetic number, because the mean of its divisors is an integer number (9168030).

Almost surely, 2^73023978 is an apocalyptic number.

73023978 is an abundant number, since it is smaller than the sum of its proper divisors (73664502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73023978 is a wasteful number, since it uses less digits than its factorization.

73023978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53381.

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 73023978 is about 8545.4068364239. The cubic root of 73023978 is about 417.9796736222.

The spelling of 73023978 in words is "seventy-three million, twenty-three thousand, nine hundred seventy-eight".