426820194 has 12 divisors (see below), whose sum is σ = 924777126. Its totient is φ = 142273392.

The previous prime is 426820187. The next prime is 426820201. The reversal of 426820194 is 491028624.

It is an interprime number because it is at equal distance from previous prime (426820187) and next prime (426820201).

It can be written as a sum of positive squares in only one way, i.e., 389549169 + 37271025 = 19737^2 + 6105^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11856099 + ... + 11856134.

Almost surely, 2^426820194 is an apocalyptic number.

426820194 is an abundant number, since it is smaller than the sum of its proper divisors (497956932).

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

426820194 is a wasteful number, since it uses less digits than its factorization.

426820194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23712241 (or 23712238 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 426820194 is about 20659.6271505562. The cubic root of 426820194 is about 752.9191089966.

The spelling of 426820194 in words is "four hundred twenty-six million, eight hundred twenty thousand, one hundred ninety-four".