74315520 has 108 divisors (see below), whose sum is σ = 257163816. Its totient is φ = 19814400.

The previous prime is 74315491. The next prime is 74315531. The reversal of 74315520 is 2551347.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 8295 + ... + 14745.

Almost surely, 2^74315520 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 74315520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128581908).

74315520 is an abundant number, since it is smaller than the sum of its proper divisors (182848296).

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

74315520 is a wasteful number, since it uses less digits than its factorization.

74315520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6478 (or 6461 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 74315520 is about 8620.6449874705. The cubic root of 74315520 is about 420.4294926233.

Adding to 74315520 its reverse (2551347), we get a palindrome (76866867).

The spelling of 74315520 in words is "seventy-four million, three hundred fifteen thousand, five hundred twenty".