13445402 has 8 divisors (see below), whose sum is σ = 21354516. Its totient is φ = 6327232.

The previous prime is 13445389. The next prime is 13445429. The reversal of 13445402 is 20454431.

It can be written as a sum of positive squares in 2 ways, for example, as 13388281 + 57121 = 3659^2 + 239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197693 + ... + 197760.

Almost surely, 2^13445402 is an apocalyptic number.

13445402 is a deficient number, since it is larger than the sum of its proper divisors (7909114).

13445402 is a wasteful number, since it uses less digits than its factorization.

13445402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395472.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 13445402 is about 3666.7972400993. The cubic root of 13445402 is about 237.7887280762.

Adding to 13445402 its reverse (20454431), we get a palindrome (33899833).

The spelling of 13445402 in words is "thirteen million, four hundred forty-five thousand, four hundred two".