74904420 has 24 divisors (see below), whose sum is σ = 209732544. Its totient is φ = 19974496.

The previous prime is 74904413. The next prime is 74904421. The reversal of 74904420 is 2440947.

It is a super-2 number, since 2×74904420² = 11221344271072800, which contains 22 as substring.

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 (74904421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624144 + ... + 624263.

It is an arithmetic number, because the mean of its divisors is an integer number (8738856).

Almost surely, 2^74904420 is an apocalyptic number.

It is an amenable number.

74904420 is an abundant number, since it is smaller than the sum of its proper divisors (134828124).

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

74904420 is a wasteful number, since it uses less digits than its factorization.

74904420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248419 (or 1248417 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 74904420 is about 8654.7339647155. The cubic root of 74904420 is about 421.5371113980.

The spelling of 74904420 in words is "seventy-four million, nine hundred four thousand, four hundred twenty".