74889378 has 12 divisors (see below), whose sum is σ = 162260358. Its totient is φ = 24963120.

The previous prime is 74889361. The next prime is 74889389. The reversal of 74889378 is 87398847.

74889378 is a `hidden beast` number, since 7 + 488 + 93 + 78 = 666.

It can be written as a sum of positive squares in only one way, i.e., 72539289 + 2350089 = 8517^2 + 1533^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2080243 + ... + 2080278.

Almost surely, 2^74889378 is an apocalyptic number.

74889378 is an abundant number, since it is smaller than the sum of its proper divisors (87370980).

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

74889378 is a wasteful number, since it uses less digits than its factorization.

74889378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4160529 (or 4160526 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 74889378 is about 8653.8649169027. The cubic root of 74889378 is about 421.5088923881.

The spelling of 74889378 in words is "seventy-four million, eight hundred eighty-nine thousand, three hundred seventy-eight".