74185412 has 48 divisors (see below), whose sum is σ = 152880000. Its totient is φ = 31483872.

The previous prime is 74185379. The next prime is 74185417. The reversal of 74185412 is 21458147.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (74185417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190514 + ... + 190902.

It is an arithmetic number, because the mean of its divisors is an integer number (3185000).

Almost surely, 2^74185412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74185412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76440000).

74185412 is an abundant number, since it is smaller than the sum of its proper divisors (78694588).

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

74185412 is a wasteful number, since it uses less digits than its factorization.

74185412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553 (or 537 counting only the distinct ones).

The product of its digits is 8960, while the sum is 32.

The square root of 74185412 is about 8613.0953785500. The cubic root of 74185412 is about 420.1839934585.

The spelling of 74185412 in words is "seventy-four million, one hundred eighty-five thousand, four hundred twelve".