74189690 has 16 divisors (see below), whose sum is σ = 135233280. Its totient is φ = 29299920.

The previous prime is 74189677. The next prime is 74189701. The reversal of 74189690 is 9698147.

It is a super-2 number, since 2×74189690² = 11008220204592200, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

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 7 ways as a sum of consecutive naturals, for example, 46166 + ... + 47745.

It is an arithmetic number, because the mean of its divisors is an integer number (8452080).

Almost surely, 2^74189690 is an apocalyptic number.

74189690 is a deficient number, since it is larger than the sum of its proper divisors (61043590).

74189690 is a wasteful number, since it uses less digits than its factorization.

74189690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93997.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 74189690 is about 8613.3437177440. The cubic root of 74189690 is about 420.1920701254.

The spelling of 74189690 in words is "seventy-four million, one hundred eighty-nine thousand, six hundred ninety".