13217974 has 16 divisors (see below), whose sum is σ = 24719616. Its totient is φ = 5149800.

The previous prime is 13217969. The next prime is 13218019. The reversal of 13217974 is 47971231.

13217974 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42762 + ... + 43069.

It is an arithmetic number, because the mean of its divisors is an integer number (1544976).

Almost surely, 2^13217974 is an apocalyptic number.

13217974 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13217974 is a deficient number, since it is larger than the sum of its proper divisors (11501642).

13217974 is a wasteful number, since it uses less digits than its factorization.

13217974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85851.

The product of its digits is 10584, while the sum is 34.

The square root of 13217974 is about 3635.6531737777. The cubic root of 13217974 is about 236.4403704330.

The spelling of 13217974 in words is "thirteen million, two hundred seventeen thousand, nine hundred seventy-four".