13287970 has 8 divisors (see below), whose sum is σ = 23918364. Its totient is φ = 5315184.

The previous prime is 13287949. The next prime is 13287991. The reversal of 13287970 is 7978231.

It is an interprime number because it is at equal distance from previous prime (13287949) and next prime (13287991).

It can be written as a sum of positive squares in 2 ways, for example, as 12439729 + 848241 = 3527^2 + 921^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664389 + ... + 664408.

Almost surely, 2^13287970 is an apocalyptic number.

13287970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13287970 is a deficient number, since it is larger than the sum of its proper divisors (10630394).

13287970 is a wasteful number, since it uses less digits than its factorization.

13287970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328804.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 13287970 is about 3645.2667940769. The cubic root of 13287970 is about 236.8569938485.

The spelling of 13287970 in words is "thirteen million, two hundred eighty-seven thousand, nine hundred seventy".