74825220 has 48 divisors (see below), whose sum is σ = 216740160. Its totient is φ = 19264896.

The previous prime is 74825213. The next prime is 74825221. The reversal of 74825220 is 2252847.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (74825221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19762 + ... + 23241.

It is an arithmetic number, because the mean of its divisors is an integer number (4515420).

Almost surely, 2^74825220 is an apocalyptic number.

It is an amenable number.

74825220 is an abundant number, since it is smaller than the sum of its proper divisors (141914940).

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

74825220 is a wasteful number, since it uses less digits than its factorization.

74825220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43044 (or 43042 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 74825220 is about 8650.1572240047. The cubic root of 74825220 is about 421.3884886024.

The spelling of 74825220 in words is "seventy-four million, eight hundred twenty-five thousand, two hundred twenty".