426881620 has 24 divisors (see below), whose sum is σ = 977947488. Its totient is φ = 155229600.

The previous prime is 426881593. The next prime is 426881621. The reversal of 426881620 is 26188624.

It is a super-3 number, since 3×426881620³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 426881620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426881621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 969966 + ... + 970405.

It is an arithmetic number, because the mean of its divisors is an integer number (40747812).

Almost surely, 2^426881620 is an apocalyptic number.

It is an amenable number.

426881620 is an abundant number, since it is smaller than the sum of its proper divisors (551065868).

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

426881620 is a wasteful number, since it uses less digits than its factorization.

426881620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940391 (or 1940389 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 426881620 is about 20661.1137163513. The cubic root of 426881620 is about 752.9552261495.

The spelling of 426881620 in words is "four hundred twenty-six million, eight hundred eighty-one thousand, six hundred twenty".