74820220 has 12 divisors (see below), whose sum is σ = 157122504. Its totient is φ = 29928080.

The previous prime is 74820211. The next prime is 74820223. The reversal of 74820220 is 2202847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74820223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1870486 + ... + 1870525.

It is an arithmetic number, because the mean of its divisors is an integer number (13093542).

Almost surely, 2^74820220 is an apocalyptic number.

It is an amenable number.

74820220 is an abundant number, since it is smaller than the sum of its proper divisors (82302284).

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

74820220 is a wasteful number, since it uses less digits than its factorization.

74820220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3741020 (or 3741018 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 74820220 is about 8649.8682070885. The cubic root of 74820220 is about 421.3791023314.

The spelling of 74820220 in words is "seventy-four million, eight hundred twenty thousand, two hundred twenty".