13898920 has 32 divisors (see below), whose sum is σ = 35740800. Its totient is φ = 4765248.

The previous prime is 13898897. The next prime is 13898947. The reversal of 13898920 is 2989831.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24540 + ... + 25099.

It is an arithmetic number, because the mean of its divisors is an integer number (1116900).

Almost surely, 2^13898920 is an apocalyptic number.

13898920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13898920 is an abundant number, since it is smaller than the sum of its proper divisors (21841880).

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

13898920 is a wasteful number, since it uses less digits than its factorization.

13898920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49657 (or 49653 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 13898920 is about 3728.1255343671. The cubic root of 13898920 is about 240.4327839210.

The spelling of 13898920 in words is "thirteen million, eight hundred ninety-eight thousand, nine hundred twenty".