13900032 has 72 divisors (see below), whose sum is σ = 41125280. Its totient is φ = 4631040.

The previous prime is 13900013. The next prime is 13900043. The reversal of 13900032 is 23000931.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13899978 and 13900014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5907 + ... + 7917.

Almost surely, 2^13900032 is an apocalyptic number.

13900032 is a gapful number since it is divisible by the number (12) 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 13900032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20562640).

13900032 is an abundant number, since it is smaller than the sum of its proper divisors (27225248).

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

13900032 is an equidigital number, since it uses as much as digits as its factorization.

13900032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2036 (or 2016 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 13900032 is about 3728.2746679932. The cubic root of 13900032 is about 240.4391957891.

Adding to 13900032 its reverse (23000931), we get a palindrome (36900963).

The spelling of 13900032 in words is "thirteen million, nine hundred thousand, thirty-two".