13921622 has 16 divisors (see below), whose sum is σ = 24533712. Its totient is φ = 5841120.

The previous prime is 13921571. The next prime is 13921643. The reversal of 13921622 is 22612931.

It is a super-2 number, since 2×13921622² = 387623118221768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 13921591 and 13921600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24053 + ... + 24624.

It is an arithmetic number, because the mean of its divisors is an integer number (1533357).

Almost surely, 2^13921622 is an apocalyptic number.

13921622 is a deficient number, since it is larger than the sum of its proper divisors (10612090).

13921622 is a wasteful number, since it uses less digits than its factorization.

13921622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48703.

The product of its digits is 1296, while the sum is 26.

The square root of 13921622 is about 3731.1689857202. The cubic root of 13921622 is about 240.5636174907.

The spelling of 13921622 in words is "thirteen million, nine hundred twenty-one thousand, six hundred twenty-two".