74228736 has 88 divisors (see below), whose sum is σ = 201162784. Its totient is φ = 24330240.

The previous prime is 74228729. The next prime is 74228743. The reversal of 74228736 is 63782247.

It is an interprime number because it is at equal distance from previous prime (74228729) and next prime (74228743).

It is a junction number, because it is equal to n+sod(n) for n = 74228694 and 74228703.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224091 + ... + 224421.

Almost surely, 2^74228736 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 74228736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100581392).

74228736 is an abundant number, since it is smaller than the sum of its proper divisors (126934048).

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

74228736 is a wasteful number, since it uses less digits than its factorization.

74228736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 409 counting only the distinct ones).

The product of its digits is 112896, while the sum is 39.

The square root of 74228736 is about 8615.6100190294. The cubic root of 74228736 is about 420.2657728286.

The spelling of 74228736 in words is "seventy-four million, two hundred twenty-eight thousand, seven hundred thirty-six".