13340394 has 36 divisors (see below), whose sum is σ = 30520386. Its totient is φ = 4210704.

The previous prime is 13340357. The next prime is 13340407. The reversal of 13340394 is 49304331.

It can be written as a sum of positive squares in only one way, i.e., 11309769 + 2030625 = 3363^2 + 1425^2 .

It is a super-2 number, since 2×13340394² = 355932224150472, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5472 + ... + 7524.

Almost surely, 2^13340394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13340394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15260193).

13340394 is an abundant number, since it is smaller than the sum of its proper divisors (17179992).

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

13340394 is a wasteful number, since it uses less digits than its factorization.

13340394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2099 (or 2077 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 13340394 is about 3652.4504103410. The cubic root of 13340394 is about 237.1680696431.

The spelling of 13340394 in words is "thirteen million, three hundred forty thousand, three hundred ninety-four".