426616820 has 48 divisors (see below), whose sum is σ = 1025256960. Its totient is φ = 146072064.

The previous prime is 426616807. The next prime is 426616831. The reversal of 426616820 is 28616624.

It is a super-2 number, since 2×426616820² = 364003822213824800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

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, 135221 + ... + 138339.

It is an arithmetic number, because the mean of its divisors is an integer number (21359520).

Almost surely, 2^426616820 is an apocalyptic number.

It is an amenable number.

426616820 is an abundant number, since it is smaller than the sum of its proper divisors (598640140).

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

426616820 is a wasteful number, since it uses less digits than its factorization.

426616820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4112 (or 4110 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 426616820 is about 20654.7045488431. The cubic root of 426616820 is about 752.7995047698.

The spelling of 426616820 in words is "four hundred twenty-six million, six hundred sixteen thousand, eight hundred twenty".