74878534 has 4 divisors (see below), whose sum is σ = 112317804. Its totient is φ = 37439266.

The previous prime is 74878519. The next prime is 74878577. The reversal of 74878534 is 43587847.

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

It is a congruent number.

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 as a sum of consecutive naturals, namely, 18719632 + ... + 18719635.

It is an arithmetic number, because the mean of its divisors is an integer number (28079451).

Almost surely, 2^74878534 is an apocalyptic number.

74878534 is a deficient number, since it is larger than the sum of its proper divisors (37439270).

74878534 is a wasteful number, since it uses less digits than its factorization.

74878534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37439269.

The product of its digits is 752640, while the sum is 46.

The square root of 74878534 is about 8653.2383533565. The cubic root of 74878534 is about 421.4885465429.

The spelling of 74878534 in words is "seventy-four million, eight hundred seventy-eight thousand, five hundred thirty-four".