74890980 has 60 divisors (see below), whose sum is σ = 234940860. Its totient is φ = 19970496.

The previous prime is 74890979. The next prime is 74891023. The reversal of 74890980 is 8909847.

It can be written as a sum of positive squares in 2 ways, for example, as 59351616 + 15539364 = 7704^2 + 3942^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 21495 + ... + 24734.

It is an arithmetic number, because the mean of its divisors is an integer number (3915681).

Almost surely, 2^74890980 is an apocalyptic number.

It is an amenable number.

74890980 is an abundant number, since it is smaller than the sum of its proper divisors (160049880).

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

74890980 is a wasteful number, since it uses less digits than its factorization.

74890980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46250 (or 46239 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 74890980 is about 8653.9574762071. The cubic root of 74890980 is about 421.5118979430.

The spelling of 74890980 in words is "seventy-four million, eight hundred ninety thousand, nine hundred eighty".