13931748 has 18 divisors (see below), whose sum is σ = 35216454. Its totient is φ = 4643904.

The previous prime is 13931737. The next prime is 13931761. The reversal of 13931748 is 84713931.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12659364 + 1272384 = 3558^2 + 1128^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 386993 = 13931748 / (1 + 3 + 9 + 3 + 1 + 7 + 4 + 8).

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 5 ways as a sum of consecutive naturals, for example, 193461 + ... + 193532.

Almost surely, 2^13931748 is an apocalyptic number.

13931748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13931748 is an abundant number, since it is smaller than the sum of its proper divisors (21284706).

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

13931748 is a wasteful number, since it uses less digits than its factorization.

13931748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387003 (or 386998 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 13931748 is about 3732.5256864488. The cubic root of 13931748 is about 240.6219286278.

The spelling of 13931748 in words is "thirteen million, nine hundred thirty-one thousand, seven hundred forty-eight".