13881894 has 96 divisors (see below), whose sum is σ = 34564320. Its totient is φ = 3677184.

The previous prime is 13881871. The next prime is 13881943. The reversal of 13881894 is 49818831.

13881894 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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 478672 + ... + 478700.

It is an arithmetic number, because the mean of its divisors is an integer number (360045).

Almost surely, 2^13881894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13881894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17282160).

13881894 is an abundant number, since it is smaller than the sum of its proper divisors (20682426).

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

13881894 is a wasteful number, since it uses less digits than its factorization.

13881894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 83 counting only the distinct ones).

The product of its digits is 55296, while the sum is 42.

The square root of 13881894 is about 3725.8413814869. The cubic root of 13881894 is about 240.3345681063.

The spelling of 13881894 in words is "thirteen million, eight hundred eighty-one thousand, eight hundred ninety-four".