13288402 has 8 divisors (see below), whose sum is σ = 20471436. Its totient is φ = 6464592.

The previous prime is 13288399. The next prime is 13288403. The reversal of 13288402 is 20488231.

13288402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11826721 + 1461681 = 3439^2 + 1209^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13288403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89713 + ... + 89860.

Almost surely, 2^13288402 is an apocalyptic number.

13288402 is a deficient number, since it is larger than the sum of its proper divisors (7183034).

13288402 is a wasteful number, since it uses less digits than its factorization.

13288402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179612.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 13288402 is about 3645.3260485175. The cubic root of 13288402 is about 236.8595606091.

It can be divided in two parts, 1328 and 8402, that added together give a triangular number (9730 = T₁₃₉).

The spelling of 13288402 in words is "thirteen million, two hundred eighty-eight thousand, four hundred two".