422684784 has 80 divisors (see below), whose sum is σ = 1216484640. Its totient is φ = 140520960.

The previous prime is 422684767. The next prime is 422684803. The reversal of 422684784 is 487486224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196354 + ... + 198494.

It is an arithmetic number, because the mean of its divisors is an integer number (15206058).

Almost surely, 2^422684784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422684784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (608242320).

422684784 is an abundant number, since it is smaller than the sum of its proper divisors (793799856).

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

422684784 is a wasteful number, since it uses less digits than its factorization.

422684784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615 (or 2603 counting only the distinct ones).

The product of its digits is 688128, while the sum is 45.

The square root of 422684784 is about 20559.2992098466. The cubic root of 422684784 is about 750.4795652908.

The spelling of 422684784 in words is "four hundred twenty-two million, six hundred eighty-four thousand, seven hundred eighty-four".