13988784 has 40 divisors (see below), whose sum is σ = 37711872. Its totient is φ = 4459840.

The previous prime is 13988783. The next prime is 13988789. The reversal of 13988784 is 48788931.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (13988783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5232 + ... + 7439.

Almost surely, 2^13988784 is an apocalyptic number.

It is an amenable number.

13988784 is an abundant number, since it is smaller than the sum of its proper divisors (23723088).

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

13988784 is a wasteful number, since it uses less digits than its factorization.

13988784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12705 (or 12699 counting only the distinct ones).

The product of its digits is 387072, while the sum is 48.

The square root of 13988784 is about 3740.1582854206. The cubic root of 13988784 is about 240.9498469468.

The spelling of 13988784 in words is "thirteen million, nine hundred eighty-eight thousand, seven hundred eighty-four".