13821854 has 32 divisors (see below), whose sum is σ = 22809600. Its totient is φ = 6259680.

The previous prime is 13821853. The next prime is 13821869. The reversal of 13821854 is 45812831.

It is a self number, because there is not a number n which added to its sum of digits gives 13821854.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13821853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126752 + ... + 126860.

It is an arithmetic number, because the mean of its divisors is an integer number (712800).

Almost surely, 2^13821854 is an apocalyptic number.

13821854 is a deficient number, since it is larger than the sum of its proper divisors (8987746).

13821854 is a wasteful number, since it uses less digits than its factorization.

13821854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248.

The product of its digits is 7680, while the sum is 32.

The square root of 13821854 is about 3717.7754101075. The cubic root of 13821854 is about 239.9875803758.

The spelling of 13821854 in words is "thirteen million, eight hundred twenty-one thousand, eight hundred fifty-four".