13969220 has 24 divisors (see below), whose sum is σ = 30283008. Its totient is φ = 5407200.

The previous prime is 13969217. The next prime is 13969247. The reversal of 13969220 is 2296931.

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, 10646 + ... + 11885.

It is an arithmetic number, because the mean of its divisors is an integer number (1261792).

Almost surely, 2^13969220 is an apocalyptic number.

13969220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13969220 is an abundant number, since it is smaller than the sum of its proper divisors (16313788).

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

13969220 is a wasteful number, since it uses less digits than its factorization.

13969220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22571 (or 22569 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 13969220 is about 3737.5419730085. The cubic root of 13969220 is about 240.8374678180.

The spelling of 13969220 in words is "thirteen million, nine hundred sixty-nine thousand, two hundred twenty".