13447988 has 12 divisors (see below), whose sum is σ = 23933280. Its totient is φ = 6609912.

The previous prime is 13447963. The next prime is 13447997. The reversal of 13447988 is 88974431.

13447988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×13447988³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28256 + ... + 28727.

It is an arithmetic number, because the mean of its divisors is an integer number (1994440).

Almost surely, 2^13447988 is an apocalyptic number.

It is an amenable number.

13447988 is a deficient number, since it is larger than the sum of its proper divisors (10485292).

13447988 is a wasteful number, since it uses less digits than its factorization.

13447988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57046 (or 57044 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 13447988 is about 3667.1498469520. The cubic root of 13447988 is about 237.8039720045.

The spelling of 13447988 in words is "thirteen million, four hundred forty-seven thousand, nine hundred eighty-eight".