13981574 has 16 divisors (see below), whose sum is σ = 21633696. Its totient is φ = 6772800.

The previous prime is 13981573. The next prime is 13981577. The reversal of 13981574 is 47518931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13981573) 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, 13184 + ... + 14204.

It is an arithmetic number, because the mean of its divisors is an integer number (1352106).

Almost surely, 2^13981574 is an apocalyptic number.

13981574 is a deficient number, since it is larger than the sum of its proper divisors (7652122).

13981574 is a wasteful number, since it uses less digits than its factorization.

13981574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231.

The product of its digits is 30240, while the sum is 38.

The square root of 13981574 is about 3739.1942982413. The cubic root of 13981574 is about 240.9084436113.

The spelling of 13981574 in words is "thirteen million, nine hundred eighty-one thousand, five hundred seventy-four".