428626 has 8 divisors (see below), whose sum is σ = 701424. Its totient is φ = 194820.

The previous prime is 428579. The next prime is 428629. The reversal of 428626 is 626824.

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

It is a junction number, because it is equal to n+sod(n) for n = 428594 and 428603.

It is not an unprimeable number, because it can be changed into a prime (428629) 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, 9720 + ... + 9763.

It is an arithmetic number, because the mean of its divisors is an integer number (87678).

2⁴²⁸⁶²⁶ is an apocalyptic number.

428626 is a deficient number, since it is larger than the sum of its proper divisors (272798).

428626 is a wasteful number, since it uses less digits than its factorization.

428626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19496.

The product of its digits is 4608, while the sum is 28.

The square root of 428626 is about 654.6953489983. The cubic root of 428626 is about 75.3979440651.

It can be divided in two parts, 42 and 8626, that added together give a palindrome (8668).

The spelling of 428626 in words is "four hundred twenty-eight thousand, six hundred twenty-six".