13851660 has 24 divisors (see below), whose sum is σ = 38784816. Its totient is φ = 3693760.

The previous prime is 13851631. The next prime is 13851679. The reversal of 13851660 is 6615831.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 115371 + ... + 115490.

It is an arithmetic number, because the mean of its divisors is an integer number (1616034).

Almost surely, 2^13851660 is an apocalyptic number.

13851660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13851660 is an abundant number, since it is smaller than the sum of its proper divisors (24933156).

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

13851660 is a wasteful number, since it uses less digits than its factorization.

13851660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230873 (or 230871 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 13851660 is about 3721.7818313276. The cubic root of 13851660 is about 240.1599628037.

The spelling of 13851660 in words is "thirteen million, eight hundred fifty-one thousand, six hundred sixty".