13891650 has 48 divisors (see below), whose sum is σ = 35396544. Its totient is φ = 3602880.

The previous prime is 13891643. The next prime is 13891651. The reversal of 13891650 is 5619831.

13891650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13891651) 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, 4299 + ... + 6801.

It is an arithmetic number, because the mean of its divisors is an integer number (737428).

Almost surely, 2^13891650 is an apocalyptic number.

13891650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13891650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17698272).

13891650 is an abundant number, since it is smaller than the sum of its proper divisors (21504894).

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

13891650 is a wasteful number, since it uses less digits than its factorization.

13891650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555 (or 2550 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 13891650 is about 3727.1503860188. The cubic root of 13891650 is about 240.3908561744.

It can be divided in two parts, 13891 and 650, that added together give a palindrome (14541).

The spelling of 13891650 in words is "thirteen million, eight hundred ninety-one thousand, six hundred fifty".