13721374 has 8 divisors (see below), whose sum is σ = 20613528. Its totient is φ = 6850200.

The previous prime is 13721371. The next prime is 13721377. The reversal of 13721374 is 47312731.

It is an interprime number because it is at equal distance from previous prime (13721371) and next prime (13721377).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×13721374² = 376552208895752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13721371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3492 + ... + 6295.

It is an arithmetic number, because the mean of its divisors is an integer number (2576691).

Almost surely, 2^13721374 is an apocalyptic number.

13721374 is a deficient number, since it is larger than the sum of its proper divisors (6892154).

13721374 is an equidigital number, since it uses as much as digits as its factorization.

13721374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10490.

The product of its digits is 3528, while the sum is 28.

The square root of 13721374 is about 3704.2373034135. The cubic root of 13721374 is about 239.4046237882.

The spelling of 13721374 in words is "thirteen million, seven hundred twenty-one thousand, three hundred seventy-four".