13870890 has 48 divisors (see below), whose sum is σ = 39345696. Its totient is φ = 3362400.

The previous prime is 13870867. The next prime is 13870891. The reversal of 13870890 is 9807831.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13870891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6016 + ... + 7995.

It is an arithmetic number, because the mean of its divisors is an integer number (819702).

Almost surely, 2^13870890 is an apocalyptic number.

13870890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13870890 is an abundant number, since it is smaller than the sum of its proper divisors (25474806).

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

13870890 is a wasteful number, since it uses less digits than its factorization.

13870890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14035 (or 14032 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 13870890 is about 3724.3643752995. The cubic root of 13870890 is about 240.2710479390.

The spelling of 13870890 in words is "thirteen million, eight hundred seventy thousand, eight hundred ninety".