8428623 has 16 divisors (see below), whose sum is σ = 13026816. Its totient is φ = 4747680.

The previous prime is 8428613. The next prime is 8428631. The reversal of 8428623 is 3268248.

It is not a de Polignac number, because 8428623 - 2⁵ = 8428591 is a prime.

It is a super-2 number, since 2×8428623² = 142083371352258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8428613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1336 + ... + 4317.

It is an arithmetic number, because the mean of its divisors is an integer number (814176).

Almost surely, 2^8428623 is an apocalyptic number.

8428623 is a deficient number, since it is larger than the sum of its proper divisors (4598193).

8428623 is a wasteful number, since it uses less digits than its factorization.

8428623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5734.

The product of its digits is 18432, while the sum is 33.

The square root of 8428623 is about 2903.2090865110. The cubic root of 8428623 is about 203.5099009766.

The spelling of 8428623 in words is "eight million, four hundred twenty-eight thousand, six hundred twenty-three".