74225220 has 48 divisors (see below), whose sum is σ = 212260608. Its totient is φ = 19371520.

The previous prime is 74225201. The next prime is 74225231. The reversal of 74225220 is 2252247.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10341 + ... + 15980.

It is an arithmetic number, because the mean of its divisors is an integer number (4422096).

Almost surely, 2^74225220 is an apocalyptic number.

It is an amenable number.

74225220 is an abundant number, since it is smaller than the sum of its proper divisors (138035388).

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

74225220 is a wasteful number, since it uses less digits than its factorization.

74225220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26380 (or 26378 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 74225220 is about 8615.4059683801. The cubic root of 74225220 is about 420.2591371334.

Adding to 74225220 its reverse (2252247), we get a palindrome (76477467).

The spelling of 74225220 in words is "seventy-four million, two hundred twenty-five thousand, two hundred twenty".