74185436 has 12 divisors (see below), whose sum is σ = 139811112. Its totient is φ = 34239408.

The previous prime is 74185427. The next prime is 74185453. The reversal of 74185436 is 63458147.

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

It is a self number, because there is not a number n which added to its sum of digits gives 74185436.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 713270 + ... + 713373.

It is an arithmetic number, because the mean of its divisors is an integer number (11650926).

Almost surely, 2^74185436 is an apocalyptic number.

It is an amenable number.

74185436 is a deficient number, since it is larger than the sum of its proper divisors (65625676).

74185436 is a wasteful number, since it uses less digits than its factorization.

74185436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426660 (or 1426658 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 74185436 is about 8613.0967717773. The cubic root of 74185436 is about 420.1840387703.

The spelling of 74185436 in words is "seventy-four million, one hundred eighty-five thousand, four hundred thirty-six".