13570394 has 4 divisors (see below), whose sum is σ = 20355594. Its totient is φ = 6785196.

The previous prime is 13570393. The next prime is 13570399. The reversal of 13570394 is 49307531.

It is a happy number.

13570394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8673025 + 4897369 = 2945^2 + 2213^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13570394.

It is not an unprimeable number, because it can be changed into a prime (13570393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3392597 + ... + 3392600.

Almost surely, 2^13570394 is an apocalyptic number.

13570394 is a deficient number, since it is larger than the sum of its proper divisors (6785200).

13570394 is an equidigital number, since it uses as much as digits as its factorization.

13570394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6785199.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 13570394 is about 3683.8015690316. The cubic root of 13570394 is about 238.5233053742.

The spelling of 13570394 in words is "thirteen million, five hundred seventy thousand, three hundred ninety-four".