426334581 has 12 divisors (see below), whose sum is σ = 615996108. Its totient is φ = 284140224.

The previous prime is 426334553. The next prime is 426334589. The reversal of 426334581 is 185433624.

426334581 is a `hidden beast` number, since 42 + 6 + 3 + 34 + 581 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 174477681 + 251856900 = 13209^2 + 15870^2 .

It is not a de Polignac number, because 426334581 - 2⁵ = 426334549 is a prime.

It is a super-2 number, since 2×426334581² = 363522349912891122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426334589) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53641 + ... + 61073.

It is an arithmetic number, because the mean of its divisors is an integer number (51333009).

Almost surely, 2^426334581 is an apocalyptic number.

It is an amenable number.

426334581 is a deficient number, since it is larger than the sum of its proper divisors (189661527).

426334581 is a wasteful number, since it uses less digits than its factorization.

426334581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13812 (or 13809 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 426334581 is about 20647.8711009150. The cubic root of 426334581 is about 752.6334570493.

The spelling of 426334581 in words is "four hundred twenty-six million, three hundred thirty-four thousand, five hundred eighty-one".