74621938 has 4 divisors (see below), whose sum is σ = 111932910. Its totient is φ = 37310968.

The previous prime is 74621909. The next prime is 74621941. The reversal of 74621938 is 83912647.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 44448889 + 30173049 = 6667^2 + 5493^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 74621938.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18655483 + ... + 18655486.

Almost surely, 2^74621938 is an apocalyptic number.

74621938 is a deficient number, since it is larger than the sum of its proper divisors (37310972).

74621938 is a wasteful number, since it uses less digits than its factorization.

74621938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37310971.

The product of its digits is 72576, while the sum is 40.

The square root of 74621938 is about 8638.3990414891. The cubic root of 74621938 is about 421.0065390175.

The spelling of 74621938 in words is "seventy-four million, six hundred twenty-one thousand, nine hundred thirty-eight".