73978004 has 6 divisors (see below), whose sum is σ = 129461514. Its totient is φ = 36989000.

The previous prime is 73977989. The next prime is 73978013. The reversal of 73978004 is 40087937.

It can be written as a sum of positive squares in only one way, i.e., 68227600 + 5750404 = 8260^2 + 2398^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9247247 + ... + 9247254.

It is an arithmetic number, because the mean of its divisors is an integer number (21576919).

Almost surely, 2^73978004 is an apocalyptic number.

It is an amenable number.

73978004 is a deficient number, since it is larger than the sum of its proper divisors (55483510).

73978004 is a wasteful number, since it uses less digits than its factorization.

73978004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18494505 (or 18494503 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 73978004 is about 8601.0466804919. The cubic root of 73978004 is about 419.7920436872.

The spelling of 73978004 in words is "seventy-three million, nine hundred seventy-eight thousand, four".