13631398 has 16 divisors (see below), whose sum is σ = 23480640. Its totient is φ = 5869800.

The previous prime is 13631383. The next prime is 13631411. The reversal of 13631398 is 89313631.

It is a super-2 number, since 2×13631398² = 371630022868808, which contains 22 as substring.

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, 15888 + ... + 16723.

It is an arithmetic number, because the mean of its divisors is an integer number (1467540).

Almost surely, 2^13631398 is an apocalyptic number.

13631398 is a deficient number, since it is larger than the sum of its proper divisors (9849242).

13631398 is a wasteful number, since it uses less digits than its factorization.

13631398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32643.

The product of its digits is 11664, while the sum is 34.

The square root of 13631398 is about 3692.0723178183. The cubic root of 13631398 is about 238.8801883096.

The spelling of 13631398 in words is "thirteen million, six hundred thirty-one thousand, three hundred ninety-eight".