74972736 has 112 divisors (see below), whose sum is σ = 225755200. Its totient is φ = 24385536.

The previous prime is 74972717. The next prime is 74972749. The reversal of 74972736 is 63727947.

It is a happy number.

It is a super-2 number, since 2×74972736² = 11241822286651392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74972691 and 74972700.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73800 + ... + 74808.

Almost surely, 2^74972736 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 74972736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112877600).

74972736 is an abundant number, since it is smaller than the sum of its proper divisors (150782464).

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

74972736 is a wasteful number, since it uses less digits than its factorization.

74972736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073 (or 1057 counting only the distinct ones).

The product of its digits is 444528, while the sum is 45.

The square root of 74972736 is about 8658.6798069914. The cubic root of 74972736 is about 421.6652256838.

The spelling of 74972736 in words is "seventy-four million, nine hundred seventy-two thousand, seven hundred thirty-six".