74294520 has 128 divisors (see below), whose sum is σ = 237211200. Its totient is φ = 18579456.

The previous prime is 74294477. The next prime is 74294533. The reversal of 74294520 is 2549247.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128472 + ... + 129048.

Almost surely, 2^74294520 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 74294520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118605600).

74294520 is an abundant number, since it is smaller than the sum of its proper divisors (162916680).

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

74294520 is a wasteful number, since it uses less digits than its factorization.

74294520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 74294520 is about 8619.4268951016. The cubic root of 74294520 is about 420.3898873874.

The spelling of 74294520 in words is "seventy-four million, two hundred ninety-four thousand, five hundred twenty".