13811870 has 8 divisors (see below), whose sum is σ = 24861384. Its totient is φ = 5524744.

The previous prime is 13811857. The next prime is 13811893. The reversal of 13811870 is 7811831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 690584 + ... + 690603.

It is an arithmetic number, because the mean of its divisors is an integer number (3107673).

Almost surely, 2^13811870 is an apocalyptic number.

13811870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13811870 is a deficient number, since it is larger than the sum of its proper divisors (11049514).

13811870 is a wasteful number, since it uses less digits than its factorization.

13811870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381194.

The product of its (nonzero) digits is 1344, while the sum is 29.

The square root of 13811870 is about 3716.4324290911. The cubic root of 13811870 is about 239.9297826991.

The spelling of 13811870 in words is "thirteen million, eight hundred eleven thousand, eight hundred seventy".