426890 has 8 divisors (see below), whose sum is σ = 768420. Its totient is φ = 170752.

The previous prime is 426889. The next prime is 426893. The reversal of 426890 is 98624.

426890 = T₄₆₀ + T₄₆₁ + ... + T₄₆₃.

It can be written as a sum of positive squares in 2 ways, for example, as 418609 + 8281 = 647^2 + 91^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×426890³ = 233382989786307000, which contains 333 as substring.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 426890.

It is not an unprimeable number, because it can be changed into a prime (426893) 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, 21335 + ... + 21354.

2⁴²⁶⁸⁹⁰ is an apocalyptic number.

426890 is a deficient number, since it is larger than the sum of its proper divisors (341530).

426890 is a wasteful number, since it uses less digits than its factorization.

426890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42696.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 426890 is about 653.3681963487. The cubic root of 426890 is about 75.2960153139.

The spelling of 426890 in words is "four hundred twenty-six thousand, eight hundred ninety".