74925780 has 96 divisors (see below), whose sum is σ = 217413504. Its totient is φ = 19267584.

The previous prime is 74925779. The next prime is 74925793. The reversal of 74925780 is 8752947.

It is a super-2 number, since 2×74925780² = 11227745017216800, which contains 22 as substring.

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, 291412 + ... + 291668.

It is an arithmetic number, because the mean of its divisors is an integer number (2264724).

Almost surely, 2^74925780 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 74925780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108706752).

74925780 is an abundant number, since it is smaller than the sum of its proper divisors (142487724).

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

74925780 is a wasteful number, since it uses less digits than its factorization.

74925780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 74925780 is about 8655.9678834894. The cubic root of 74925780 is about 421.5771765769.

The spelling of 74925780 in words is "seventy-four million, nine hundred twenty-five thousand, seven hundred eighty".