13249988 has 12 divisors (see below), whose sum is σ = 23417772. Its totient is φ = 6559200.

The previous prime is 13249967. The next prime is 13249997. The reversal of 13249988 is 88994231.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13017664 + 232324 = 3608^2 + 482^2 .

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 3 ways as a sum of consecutive naturals, for example, 15995 + ... + 16802.

It is an arithmetic number, because the mean of its divisors is an integer number (1951481).

Almost surely, 2^13249988 is an apocalyptic number.

It is an amenable number.

13249988 is a deficient number, since it is larger than the sum of its proper divisors (10167784).

13249988 is a wasteful number, since it uses less digits than its factorization.

13249988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32902 (or 32900 counting only the distinct ones).

The product of its digits is 124416, while the sum is 44.

The square root of 13249988 is about 3640.0532963131. The cubic root of 13249988 is about 236.6311031223.

The spelling of 13249988 in words is "thirteen million, two hundred forty-nine thousand, nine hundred eighty-eight".