74332220 has 24 divisors (see below), whose sum is σ = 161481600. Its totient is φ = 28707392.

The previous prime is 74332217. The next prime is 74332229. The reversal of 74332220 is 2223347.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74332229) 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 7 ways as a sum of consecutive naturals, for example, 63500 + ... + 64659.

It is an arithmetic number, because the mean of its divisors is an integer number (6728400).

Almost surely, 2^74332220 is an apocalyptic number.

It is an amenable number.

74332220 is an abundant number, since it is smaller than the sum of its proper divisors (87149380).

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

74332220 is a wasteful number, since it uses less digits than its factorization.

74332220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128197 (or 128195 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 74332220 is about 8621.6135380797. The cubic root of 74332220 is about 420.4609828901.

Adding to 74332220 its reverse (2223347), we get a palindrome (76555567).

The spelling of 74332220 in words is "seventy-four million, three hundred thirty-two thousand, two hundred twenty".