13921230 has 32 divisors (see below), whose sum is σ = 33509664. Its totient is φ = 3701376.

The previous prime is 13921223. The next prime is 13921231. The reversal of 13921230 is 3212931.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13921197 and 13921206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13921231) 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, 18012 + ... + 18768.

It is an arithmetic number, because the mean of its divisors is an integer number (1047177).

Almost surely, 2^13921230 is an apocalyptic number.

13921230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13921230 is an abundant number, since it is smaller than the sum of its proper divisors (19588434).

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

13921230 is a wasteful number, since it uses less digits than its factorization.

13921230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 13921230 is about 3731.1164548966. The cubic root of 13921230 is about 240.5613595684.

The spelling of 13921230 in words is "thirteen million, nine hundred twenty-one thousand, two hundred thirty".