13971830 has 16 divisors (see below), whose sum is σ = 25192080. Its totient is φ = 5579232.

The previous prime is 13971817. The next prime is 13971851. The reversal of 13971830 is 3817931.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10037 + ... + 11343.

It is an arithmetic number, because the mean of its divisors is an integer number (1574505).

Almost surely, 2^13971830 is an apocalyptic number.

13971830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13971830 is a deficient number, since it is larger than the sum of its proper divisors (11220250).

13971830 is a wasteful number, since it uses less digits than its factorization.

13971830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2383.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 13971830 is about 3737.8911166592. The cubic root of 13971830 is about 240.8524661893.

The spelling of 13971830 in words is "thirteen million, nine hundred seventy-one thousand, eight hundred thirty".