13623204 has 48 divisors (see below), whose sum is σ = 36595328. Its totient is φ = 3863808.

The previous prime is 13623179. The next prime is 13623223. The reversal of 13623204 is 40232631.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 12672 + ... + 13704.

Almost surely, 2^13623204 is an apocalyptic number.

13623204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13623204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18297664).

13623204 is an abundant number, since it is smaller than the sum of its proper divisors (22972124).

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

13623204 is a wasteful number, since it uses less digits than its factorization.

13623204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204 (or 1202 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 13623204 is about 3690.9624761029. The cubic root of 13623204 is about 238.8323141151.

Adding to 13623204 its reverse (40232631), we get a palindrome (53855835).

The spelling of 13623204 in words is "thirteen million, six hundred twenty-three thousand, two hundred four".