13220750 has 16 divisors (see below), whose sum is σ = 24749712. Its totient is φ = 5288200.

The previous prime is 13220749. The next prime is 13220773. The reversal of 13220750 is 5702231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26192 + ... + 26691.

It is an arithmetic number, because the mean of its divisors is an integer number (1546857).

Almost surely, 2^13220750 is an apocalyptic number.

13220750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13220750 is a deficient number, since it is larger than the sum of its proper divisors (11528962).

13220750 is an equidigital number, since it uses as much as digits as its factorization.

13220750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52900 (or 52890 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 13220750 is about 3636.0349283251. The cubic root of 13220750 is about 236.4569214446.

Adding to 13220750 its reverse (5702231), we get a palindrome (18922981).

The spelling of 13220750 in words is "thirteen million, two hundred twenty thousand, seven hundred fifty".