421774328 has 8 divisors (see below), whose sum is σ = 790826880. Its totient is φ = 210887160.

The previous prime is 421774321. The next prime is 421774393. The reversal of 421774328 is 823477124.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 421774291 and 421774300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421774321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26360888 + ... + 26360903.

It is an arithmetic number, because the mean of its divisors is an integer number (98853360).

Almost surely, 2^421774328 is an apocalyptic number.

It is an amenable number.

421774328 is a deficient number, since it is larger than the sum of its proper divisors (369052552).

421774328 is a wasteful number, since it uses less digits than its factorization.

421774328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52721797 (or 52721793 counting only the distinct ones).

The product of its digits is 75264, while the sum is 38.

The square root of 421774328 is about 20537.1450791000. The cubic root of 421774328 is about 749.9403377725.

The spelling of 421774328 in words is "four hundred twenty-one million, seven hundred seventy-four thousand, three hundred twenty-eight".