420804624 has 40 divisors (see below), whose sum is σ = 1098297760. Its totient is φ = 138820608.

The previous prime is 420804617. The next prime is 420804649. The reversal of 420804624 is 426408024.

It is a junction number, because it is equal to n+sod(n) for n = 420804591 and 420804600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40534 + ... + 49845.

It is an arithmetic number, because the mean of its divisors is an integer number (27457444).

Almost surely, 2^420804624 is an apocalyptic number.

It is an amenable number.

420804624 is an abundant number, since it is smaller than the sum of its proper divisors (677493136).

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

420804624 is a wasteful number, since it uses less digits than its factorization.

420804624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90487 (or 90481 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

The square root of 420804624 is about 20513.5229543830. The cubic root of 420804624 is about 749.3651659103.

The spelling of 420804624 in words is "four hundred twenty million, eight hundred four thousand, six hundred twenty-four".