13855824 has 30 divisors (see below), whose sum is σ = 38777466. Its totient is φ = 4618560.

The previous prime is 13855819. The next prime is 13855837. The reversal of 13855824 is 42855831.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13838400 + 17424 = 3720^2 + 132^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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 5 ways as a sum of consecutive naturals, for example, 47967 + ... + 48254.

Almost surely, 2^13855824 is an apocalyptic number.

It is an amenable number.

13855824 is an abundant number, since it is smaller than the sum of its proper divisors (24921642).

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

13855824 is a wasteful number, since it uses less digits than its factorization.

13855824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96235 (or 96226 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 13855824 is about 3722.3411987619. The cubic root of 13855824 is about 240.1840255248.

The spelling of 13855824 in words is "thirteen million, eight hundred fifty-five thousand, eight hundred twenty-four".