13927890 has 16 divisors (see below), whose sum is σ = 33427008. Its totient is φ = 3714096.

The previous prime is 13927867. The next prime is 13927909. The reversal of 13927890 is 9872931.

It is a super-2 number, since 2×13927890² = 387972239704200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232102 + ... + 232161.

It is an arithmetic number, because the mean of its divisors is an integer number (2089188).

Almost surely, 2^13927890 is an apocalyptic number.

13927890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13927890 is an abundant number, since it is smaller than the sum of its proper divisors (19499118).

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

13927890 is a wasteful number, since it uses less digits than its factorization.

13927890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464273.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 13927890 is about 3732.0088424333. The cubic root of 13927890 is about 240.5997154520.

The spelling of 13927890 in words is "thirteen million, nine hundred twenty-seven thousand, eight hundred ninety".