420630894 has 20 divisors (see below), whose sum is σ = 942525144. Its totient is φ = 140210244.

The previous prime is 420630887. The next prime is 420630943. The reversal of 420630894 is 498036024.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1298082 + ... + 1298405.

Almost surely, 2^420630894 is an apocalyptic number.

420630894 is an abundant number, since it is smaller than the sum of its proper divisors (521894250).

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

420630894 is a wasteful number, since it uses less digits than its factorization.

420630894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2596501 (or 2596492 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 420630894 is about 20509.2879934921. The cubic root of 420630894 is about 749.2620260975.

The spelling of 420630894 in words is "four hundred twenty million, six hundred thirty thousand, eight hundred ninety-four".