420784326 has 72 divisors (see below), whose sum is σ = 956797920. Its totient is φ = 133586208.

The previous prime is 420784319. The next prime is 420784327. The reversal of 420784326 is 623487024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420784327) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1564120 + ... + 1564388.

It is an arithmetic number, because the mean of its divisors is an integer number (13288860).

Almost surely, 2^420784326 is an apocalyptic number.

420784326 is an abundant number, since it is smaller than the sum of its proper divisors (536013594).

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

420784326 is a wasteful number, since it uses less digits than its factorization.

420784326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 420784326 is about 20513.0282016088. The cubic root of 420784326 is about 749.3531168834.

The spelling of 420784326 in words is "four hundred twenty million, seven hundred eighty-four thousand, three hundred twenty-six".