13397670 has 128 divisors (see below), whose sum is σ = 42094080. Its totient is φ = 2989440.

The previous prime is 13397653. The next prime is 13397677. The reversal of 13397670 is 7679331.

It is a super-2 number, since 2×13397670² = 358995122857800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13397677) 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 63 ways as a sum of consecutive naturals, for example, 38437 + ... + 38783.

It is an arithmetic number, because the mean of its divisors is an integer number (328860).

Almost surely, 2^13397670 is an apocalyptic number.

13397670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13397670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21047040).

13397670 is an abundant number, since it is smaller than the sum of its proper divisors (28696410).

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

13397670 is a wasteful number, since it uses less digits than its factorization.

13397670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 23814, while the sum is 36.

The square root of 13397670 is about 3660.2827759614. The cubic root of 13397670 is about 237.5070062568.

It can be divided in two parts, 1339 and 7670, that added together give a palindrome (9009).

The spelling of 13397670 in words is "thirteen million, three hundred ninety-seven thousand, six hundred seventy".