426197628 has 36 divisors (see below), whose sum is σ = 1080210040. Its totient is φ = 141686496.

The previous prime is 426197609. The next prime is 426197647. The reversal of 426197628 is 826791624.

It is a happy number.

426197628 is a `hidden beast` number, since 4 + 2 + 6 + 19 + 7 + 628 = 666.

It is an interprime number because it is at equal distance from previous prime (426197609) and next prime (426197647).

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×426197628² = 363288836225652768, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1975 + ... + 29262.

Almost surely, 2^426197628 is an apocalyptic number.

It is an amenable number.

426197628 is an abundant number, since it is smaller than the sum of its proper divisors (654012412).

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

426197628 is a wasteful number, since it uses less digits than its factorization.

426197628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31626 (or 31621 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 426197628 is about 20644.5544393673. The cubic root of 426197628 is about 752.5528580288.

The spelling of 426197628 in words is "four hundred twenty-six million, one hundred ninety-seven thousand, six hundred twenty-eight".