74748520 has 96 divisors (see below), whose sum is σ = 213490080. Its totient is φ = 23291520.

The previous prime is 74748503. The next prime is 74748521. The reversal of 74748520 is 2584747.

It is a self number, because there is not a number n which added to its sum of digits gives 74748520.

It is not an unprimeable number, because it can be changed into a prime (74748521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19827 + ... + 23293.

It is an arithmetic number, because the mean of its divisors is an integer number (2223855).

Almost surely, 2^74748520 is an apocalyptic number.

74748520 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74748520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106745040).

74748520 is an abundant number, since it is smaller than the sum of its proper divisors (138741560).

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

74748520 is a wasteful number, since it uses less digits than its factorization.

74748520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3503 (or 3492 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 74748520 is about 8645.7226418617. The cubic root of 74748520 is about 421.2444571880.

The spelling of 74748520 in words is "seventy-four million, seven hundred forty-eight thousand, five hundred twenty".