13877244 has 42 divisors (see below), whose sum is σ = 36418760. Its totient is φ = 4624776.

The previous prime is 13877233. The next prime is 13877249. The reversal of 13877244 is 44277831.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 13877199 and 13877208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13877249) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 537 + ... + 5295.

Almost surely, 2^13877244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13877244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18209380).

13877244 is an abundant number, since it is smaller than the sum of its proper divisors (22541516).

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

13877244 is an equidigital number, since it uses as much as digits as its factorization.

13877244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4781 (or 4764 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 13877244 is about 3725.2173090976. The cubic root of 13877244 is about 240.3077302567.

The spelling of 13877244 in words is "thirteen million, eight hundred seventy-seven thousand, two hundred forty-four".