13287402 has 20 divisors (see below), whose sum is σ = 29773986. Its totient is φ = 4429080.

The previous prime is 13287397. The next prime is 13287451. The reversal of 13287402 is 20478231.

It can be written as a sum of positive squares in only one way, i.e., 7338681 + 5948721 = 2709^2 + 2439^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 40849 + ... + 41172.

Almost surely, 2^13287402 is an apocalyptic number.

13287402 is an abundant number, since it is smaller than the sum of its proper divisors (16486584).

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

13287402 is an equidigital number, since it uses as much as digits as its factorization.

13287402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82035 (or 82026 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 13287402 is about 3645.1888839949. The cubic root of 13287402 is about 236.8536189490.

It can be divided in two parts, 13287 and 402, that added together give a square (13689 = 117²).

The spelling of 13287402 in words is "thirteen million, two hundred eighty-seven thousand, four hundred two".