13890330 has 48 divisors (see below), whose sum is σ = 38020320. Its totient is φ = 3508704.

The previous prime is 13890329. The next prime is 13890337. The reversal of 13890330 is 3309831.

It is a junction number, because it is equal to n+sod(n) for n = 13890294 and 13890303.

It is not an unprimeable number, because it can be changed into a prime (13890337) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2352 + ... + 5771.

It is an arithmetic number, because the mean of its divisors is an integer number (792090).

Almost surely, 2^13890330 is an apocalyptic number.

13890330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13890330 is an abundant number, since it is smaller than the sum of its proper divisors (24129990).

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

13890330 is a wasteful number, since it uses less digits than its factorization.

13890330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8155 (or 8152 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 13890330 is about 3726.9733028290. The cubic root of 13890330 is about 240.3832418646.

The spelling of 13890330 in words is "thirteen million, eight hundred ninety thousand, three hundred thirty".