426390 has 32 divisors (see below), whose sum is σ = 1044576. Its totient is φ = 111360.

The previous prime is 426389. The next prime is 426401. The reversal of 426390 is 93624.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 426390.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 426390.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1714 + ... + 1946.

It is an arithmetic number, because the mean of its divisors is an integer number (32643).

2⁴²⁶³⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 426390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (522288).

426390 is an abundant number, since it is smaller than the sum of its proper divisors (618186).

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

426390 is a wasteful number, since it uses less digits than its factorization.

426390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 426390 is about 652.9854515990. The cubic root of 426390 is about 75.2666067107.

The spelling of 426390 in words is "four hundred twenty-six thousand, three hundred ninety".