74942880 has 48 divisors (see below), whose sum is σ = 236071584. Its totient is φ = 19984640.

The previous prime is 74942867. The next prime is 74942887. The reversal of 74942880 is 8824947.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (74942887) 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, 77586 + ... + 78545.

It is an arithmetic number, because the mean of its divisors is an integer number (4918158).

Almost surely, 2^74942880 is an apocalyptic number.

It is an amenable number.

74942880 is an abundant number, since it is smaller than the sum of its proper divisors (161128704).

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

74942880 is a wasteful number, since it uses less digits than its factorization.

74942880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156149 (or 156141 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 74942880 is about 8656.9555849617. The cubic root of 74942880 is about 421.6092457408.

The spelling of 74942880 in words is "seventy-four million, nine hundred forty-two thousand, eight hundred eighty".