426446556 has 12 divisors (see below), whose sum is σ = 995041992. Its totient is φ = 142148848.

The previous prime is 426446551. The next prime is 426446561. The reversal of 426446556 is 655644624.

It is an interprime number because it is at equal distance from previous prime (426446551) and next prime (426446561).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×426446556² = 363713330248522272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426446551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17768595 + ... + 17768618.

It is an arithmetic number, because the mean of its divisors is an integer number (82920166).

Almost surely, 2^426446556 is an apocalyptic number.

It is an amenable number.

426446556 is an abundant number, since it is smaller than the sum of its proper divisors (568595436).

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

426446556 is a wasteful number, since it uses less digits than its factorization.

426446556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35537220 (or 35537218 counting only the distinct ones).

The product of its digits is 691200, while the sum is 42.

The square root of 426446556 is about 20650.5824615191. The cubic root of 426446556 is about 752.6993432944.

The spelling of 426446556 in words is "four hundred twenty-six million, four hundred forty-six thousand, five hundred fifty-six".