13968224 has 12 divisors (see below), whose sum is σ = 27500004. Its totient is φ = 6984096.

The previous prime is 13968223. The next prime is 13968239. The reversal of 13968224 is 42286931.

It is a super-2 number, since 2×13968224² = 390222563428352, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13968221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 218222 + ... + 218285.

It is an arithmetic number, because the mean of its divisors is an integer number (2291667).

Almost surely, 2^13968224 is an apocalyptic number.

It is an amenable number.

13968224 is a deficient number, since it is larger than the sum of its proper divisors (13531780).

13968224 is an equidigital number, since it uses as much as digits as its factorization.

13968224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436517 (or 436509 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 13968224 is about 3737.4087279825. The cubic root of 13968224 is about 240.8317438091.

The spelling of 13968224 in words is "thirteen million, nine hundred sixty-eight thousand, two hundred twenty-four".