74988820 has 24 divisors (see below), whose sum is σ = 165765600. Its totient is φ = 28416672.

The previous prime is 74988811. The next prime is 74988821. The reversal of 74988820 is 2888947.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74988821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98290 + ... + 99049.

It is an arithmetic number, because the mean of its divisors is an integer number (6906900).

Almost surely, 2^74988820 is an apocalyptic number.

It is an amenable number.

74988820 is an abundant number, since it is smaller than the sum of its proper divisors (90776780).

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

74988820 is a wasteful number, since it uses less digits than its factorization.

74988820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197367 (or 197365 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 46.

The square root of 74988820 is about 8659.6085361868. The cubic root of 74988820 is about 421.6953769936.

The spelling of 74988820 in words is "seventy-four million, nine hundred eighty-eight thousand, eight hundred twenty".