13869420 has 48 divisors (see below), whose sum is σ = 39137280. Its totient is φ = 3669696.

The previous prime is 13869419. The next prime is 13869451. The reversal of 13869420 is 2496831.

13869420 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13869420² = 384721622272800, which contains 22 as substring.

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, 7509 + ... + 9171.

It is an arithmetic number, because the mean of its divisors is an integer number (815360).

Almost surely, 2^13869420 is an apocalyptic number.

13869420 is a gapful number since it is divisible by the number (10) 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 13869420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19568640).

13869420 is an abundant number, since it is smaller than the sum of its proper divisors (25267860).

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

13869420 is a wasteful number, since it uses less digits than its factorization.

13869420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814 (or 1812 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 13869420 is about 3724.1670209592. The cubic root of 13869420 is about 240.2625598771.

The spelling of 13869420 in words is "thirteen million, eight hundred sixty-nine thousand, four hundred twenty".