426526 has 4 divisors (see below), whose sum is σ = 639792. Its totient is φ = 213262.

The previous prime is 426487. The next prime is 426527. The reversal of 426526 is 625624.

It is a semiprime because it is the product of two primes.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 426526.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106630 + ... + 106633.

It is an arithmetic number, because the mean of its divisors is an integer number (159948).

2⁴²⁶⁵²⁶ is an apocalyptic number.

426526 is a deficient number, since it is larger than the sum of its proper divisors (213266).

426526 is a wasteful number, since it uses less digits than its factorization.

426526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213265.

The product of its digits is 2880, while the sum is 25.

The square root of 426526 is about 653.0895803793. The cubic root of 426526 is about 75.2746081260.

The spelling of 426526 in words is "four hundred twenty-six thousand, five hundred twenty-six".