13928040 has 96 divisors (see below), whose sum is σ = 51742080. Its totient is φ = 3182976.

The previous prime is 13928003. The next prime is 13928059. The reversal of 13928040 is 4082931.

It is a junction number, because it is equal to n+sod(n) for n = 13927995 and 13928013.

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, 244 + ... + 5283.

It is an arithmetic number, because the mean of its divisors is an integer number (538980).

Almost surely, 2^13928040 is an apocalyptic number.

13928040 is a gapful number since it is divisible by the number (10) 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 13928040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25871040).

13928040 is an abundant number, since it is smaller than the sum of its proper divisors (37814040).

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

13928040 is a wasteful number, since it uses less digits than its factorization.

13928040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5551 (or 5544 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 13928040 is about 3732.0289387946. The cubic root of 13928040 is about 240.6005791824.

The spelling of 13928040 in words is "thirteen million, nine hundred twenty-eight thousand, forty".