74644736 has 36 divisors (see below), whose sum is σ = 150062304. Its totient is φ = 37056000.

The previous prime is 74644727. The next prime is 74644741. The reversal of 74644736 is 63744647.

It is a super-2 number, since 2×74644736² = 11143673225019392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74644693 and 74644702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37691 + ... + 39621.

Almost surely, 2^74644736 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 74644736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75031152).

74644736 is an abundant number, since it is smaller than the sum of its proper divisors (75417568).

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

74644736 is a wasteful number, since it uses less digits than its factorization.

74644736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098 (or 2084 counting only the distinct ones).

The product of its digits is 338688, while the sum is 41.

The square root of 74644736 is about 8639.7185139332. The cubic root of 74644736 is about 421.0494090280.

The spelling of 74644736 in words is "seventy-four million, six hundred forty-four thousand, seven hundred thirty-six".