426721880 has 32 divisors (see below), whose sum is σ = 1033981200. Its totient is φ = 157558656.

The previous prime is 426721877. The next prime is 426721927. The reversal of 426721880 is 88127624.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409790 + ... + 410829.

Almost surely, 2^426721880 is an apocalyptic number.

426721880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

426721880 is an abundant number, since it is smaller than the sum of its proper divisors (607259320).

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

426721880 is a wasteful number, since it uses less digits than its factorization.

426721880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820643 (or 820639 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 426721880 is about 20657.2476385408. The cubic root of 426721880 is about 752.8612952891.

The spelling of 426721880 in words is "four hundred twenty-six million, seven hundred twenty-one thousand, eight hundred eighty".