424081920 has 80 divisors (see below), whose sum is σ = 1355761440. Its totient is φ = 113086464.

The previous prime is 424081907. The next prime is 424081939. The reversal of 424081920 is 29180424.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19930 + ... + 35289.

It is an arithmetic number, because the mean of its divisors is an integer number (16947018).

Almost surely, 2^424081920 is an apocalyptic number.

424081920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

424081920 is an abundant number, since it is smaller than the sum of its proper divisors (931679520).

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

424081920 is an equidigital number, since it uses as much as digits as its factorization.

424081920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55245 (or 55229 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 424081920 is about 20593.2493793476. The cubic root of 424081920 is about 751.3055305790.

The spelling of 424081920 in words is "four hundred twenty-four million, eighty-one thousand, nine hundred twenty".