74282820 has 48 divisors (see below), whose sum is σ = 214706688. Its totient is φ = 19169280.

The previous prime is 74282807. The next prime is 74282869. The reversal of 74282820 is 2828247.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18109 + ... + 21828.

It is an arithmetic number, because the mean of its divisors is an integer number (4473056).

Almost surely, 2^74282820 is an apocalyptic number.

It is an amenable number.

74282820 is an abundant number, since it is smaller than the sum of its proper divisors (140423868).

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

74282820 is a wasteful number, since it uses less digits than its factorization.

74282820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39980 (or 39978 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 74282820 is about 8618.7481689628. The cubic root of 74282820 is about 420.3678183756.

The spelling of 74282820 in words is "seventy-four million, two hundred eighty-two thousand, eight hundred twenty".