13820356 has 24 divisors (see below), whose sum is σ = 27296640. Its totient is φ = 6064800.

The previous prime is 13820299. The next prime is 13820381. The reversal of 13820356 is 65302831.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

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, 4140 + ... + 6691.

It is an arithmetic number, because the mean of its divisors is an integer number (1137360).

Almost surely, 2^13820356 is an apocalyptic number.

It is an amenable number.

13820356 is a deficient number, since it is larger than the sum of its proper divisors (13476284).

13820356 is a wasteful number, since it uses less digits than its factorization.

13820356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10875 (or 10873 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 13820356 is about 3717.5739400851. The cubic root of 13820356 is about 239.9789101838.

The spelling of 13820356 in words is "thirteen million, eight hundred twenty thousand, three hundred fifty-six".