74771136 has 84 divisors (see below), whose sum is σ = 233821224. Its totient is φ = 22656000.

The previous prime is 74771089. The next prime is 74771159. The reversal of 74771136 is 63117747.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 74771136.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 436 + ... + 12236.

It is an arithmetic number, because the mean of its divisors is an integer number (2783586).

Almost surely, 2^74771136 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 74771136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116910612).

74771136 is an abundant number, since it is smaller than the sum of its proper divisors (159050088).

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

74771136 is a wasteful number, since it uses less digits than its factorization.

74771136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11830 (or 11817 counting only the distinct ones).

The product of its digits is 24696, while the sum is 36.

The square root of 74771136 is about 8647.0304729427. The cubic root of 74771136 is about 421.2869369766.

It can be divided in two parts, 747711 and 36, that added together give a palindrome (747747).

The spelling of 74771136 in words is "seventy-four million, seven hundred seventy-one thousand, one hundred thirty-six".