13222788 has 24 divisors (see below), whose sum is σ = 30955680. Its totient is φ = 4392960.

The previous prime is 13222777. The next prime is 13222789. The reversal of 13222788 is 88722231.

It is not an unprimeable number, because it can be changed into a prime (13222789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2308 + ... + 5636.

It is an arithmetic number, because the mean of its divisors is an integer number (1289820).

Almost surely, 2^13222788 is an apocalyptic number.

It is an amenable number.

13222788 is an abundant number, since it is smaller than the sum of its proper divisors (17732892).

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

13222788 is a wasteful number, since it uses less digits than its factorization.

13222788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3667 (or 3665 counting only the distinct ones).

The product of its digits is 10752, while the sum is 33.

The square root of 13222788 is about 3636.3151678588. The cubic root of 13222788 is about 236.4690708927.

The spelling of 13222788 in words is "thirteen million, two hundred twenty-two thousand, seven hundred eighty-eight".