420290626 has 32 divisors (see below), whose sum is σ = 764069760. Its totient is φ = 169264896.

The previous prime is 420290623. The next prime is 420290639. The reversal of 420290626 is 626092024.

It is not an unprimeable number, because it can be changed into a prime (420290623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241656 + ... + 243388.

It is an arithmetic number, because the mean of its divisors is an integer number (23877180).

Almost surely, 2^420290626 is an apocalyptic number.

420290626 is a deficient number, since it is larger than the sum of its proper divisors (343779134).

420290626 is a wasteful number, since it uses less digits than its factorization.

420290626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2778.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 420290626 is about 20500.9908541026. The cubic root of 420290626 is about 749.0599338970.

The spelling of 420290626 in words is "four hundred twenty million, two hundred ninety thousand, six hundred twenty-six".