13920128 has 16 divisors (see below), whose sum is σ = 27731760. Its totient is φ = 6960000.

The previous prime is 13920113. The next prime is 13920133. The reversal of 13920128 is 82102931.

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 13920097 and 13920106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54248 + ... + 54503.

It is an arithmetic number, because the mean of its divisors is an integer number (1733235).

Almost surely, 2^13920128 is an apocalyptic number.

It is an amenable number.

13920128 is a deficient number, since it is larger than the sum of its proper divisors (13811632).

13920128 is an equidigital number, since it uses as much as digits as its factorization.

13920128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108765 (or 108753 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 13920128 is about 3730.9687749966. The cubic root of 13920128 is about 240.5550118148. Note that the first 3 decimals are identical.

The spelling of 13920128 in words is "thirteen million, nine hundred twenty thousand, one hundred twenty-eight".