74722288 has 40 divisors (see below), whose sum is σ = 153125120. Its totient is φ = 35225280.

The previous prime is 74722283. The next prime is 74722303. The reversal of 74722288 is 88222747.

It is a self number, because there is not a number n which added to its sum of digits gives 74722288.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74722283) by changing a digit.

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, 81931 + ... + 82837.

It is an arithmetic number, because the mean of its divisors is an integer number (3828128).

Almost surely, 2^74722288 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 74722288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76562560).

74722288 is an abundant number, since it is smaller than the sum of its proper divisors (78402832).

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

74722288 is a wasteful number, since it uses less digits than its factorization.

74722288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205 (or 1199 counting only the distinct ones).

The product of its digits is 100352, while the sum is 40.

The square root of 74722288 is about 8644.2054579932. The cubic root of 74722288 is about 421.1951747073.

The spelling of 74722288 in words is "seventy-four million, seven hundred twenty-two thousand, two hundred eighty-eight".