13397838 has 16 divisors (see below), whose sum is σ = 27250560. Its totient is φ = 4390136.

The previous prime is 13397837. The next prime is 13397851. The reversal of 13397838 is 83879331.

13397838 = T₂₁₂ + T₂₁₃ + ... + T₄₄₇.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13397838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13397837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18570 + ... + 19277.

It is an arithmetic number, because the mean of its divisors is an integer number (1703160).

Almost surely, 2^13397838 is an apocalyptic number.

13397838 is an abundant number, since it is smaller than the sum of its proper divisors (13852722).

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

13397838 is a wasteful number, since it uses less digits than its factorization.

13397838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37911.

The product of its digits is 108864, while the sum is 42.

The square root of 13397838 is about 3660.3057249361. The cubic root of 13397838 is about 237.5079989919.

The spelling of 13397838 in words is "thirteen million, three hundred ninety-seven thousand, eight hundred thirty-eight".