74747244 has 96 divisors (see below), whose sum is σ = 209873664. Its totient is φ = 20401920.

The previous prime is 74747243. The next prime is 74747251. The reversal of 74747244 is 44274747.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (74747243) 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 31 ways as a sum of consecutive naturals, for example, 73282 + ... + 74294.

It is an arithmetic number, because the mean of its divisors is an integer number (2186184).

Almost surely, 2^74747244 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 74747244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104936832).

74747244 is an abundant number, since it is smaller than the sum of its proper divisors (135126420).

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

74747244 is a wasteful number, since it uses less digits than its factorization.

74747244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087 (or 1085 counting only the distinct ones).

The product of its digits is 175616, while the sum is 39.

The square root of 74747244 is about 8645.6488478309. The cubic root of 74747244 is about 421.2420602131.

The spelling of 74747244 in words is "seventy-four million, seven hundred forty-seven thousand, two hundred forty-four".