13920894 has 48 divisors (see below), whose sum is σ = 33297264. Its totient is φ = 4176000.

The previous prime is 13920887. The next prime is 13920913. The reversal of 13920894 is 49802931.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8869 + ... + 10319.

It is an arithmetic number, because the mean of its divisors is an integer number (693693).

Almost surely, 2^13920894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13920894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16648632).

13920894 is an abundant number, since it is smaller than the sum of its proper divisors (19376370).

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

13920894 is a wasteful number, since it uses less digits than its factorization.

13920894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513 (or 1510 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 13920894 is about 3731.0714278877. The cubic root of 13920894 is about 240.5594241726.

The spelling of 13920894 in words is "thirteen million, nine hundred twenty thousand, eight hundred ninety-four".