13428623 has 8 divisors (see below), whose sum is σ = 15312528. Its totient is φ = 11666304.

The previous prime is 13428617. The next prime is 13428641. The reversal of 13428623 is 32682431.

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

It is not a de Polignac number, because 13428623 - 2⁶ = 13428559 is a prime.

It is a super-2 number, since 2×13428623² = 360655831352258, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13428823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30161 + ... + 30602.

It is an arithmetic number, because the mean of its divisors is an integer number (1914066).

Almost surely, 2^13428623 is an apocalyptic number.

13428623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13428623 is a deficient number, since it is larger than the sum of its proper divisors (1883905).

13428623 is a wasteful number, since it uses less digits than its factorization.

13428623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60793.

The product of its digits is 6912, while the sum is 29.

The square root of 13428623 is about 3664.5085618675. The cubic root of 13428623 is about 237.6897718701.

The spelling of 13428623 in words is "thirteen million, four hundred twenty-eight thousand, six hundred twenty-three".