426280217 has 6 divisors (see below), whose sum is σ = 468556074. Its totient is φ = 387527360.

The previous prime is 426280213. The next prime is 426280247. The reversal of 426280217 is 712082624.

It can be written as a sum of positive squares in only one way, i.e., 370986121 + 55294096 = 19261^2 + 7436^2 .

It is not a de Polignac number, because 426280217 - 2² = 426280213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426280213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1761368 + ... + 1761609.

It is an arithmetic number, because the mean of its divisors is an integer number (78092679).

Almost surely, 2^426280217 is an apocalyptic number.

It is an amenable number.

426280217 is a deficient number, since it is larger than the sum of its proper divisors (42275857).

426280217 is a wasteful number, since it uses less digits than its factorization.

426280217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3522999 (or 3522988 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 426280217 is about 20646.5546036136. The cubic root of 426280217 is about 752.6014650362.

The spelling of 426280217 in words is "four hundred twenty-six million, two hundred eighty thousand, two hundred seventeen".