13047145 has 8 divisors (see below), whose sum is σ = 15677640. Its totient is φ = 10423680.

The previous prime is 13047127. The next prime is 13047157. The reversal of 13047145 is 54174031.

13047145 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 4 ways, for example, as 65536 + 12981609 = 256^2 + 3603^2 .

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

It is not a de Polignac number, because 13047145 - 2¹⁹ = 12522857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4125 + ... + 6565.

It is an arithmetic number, because the mean of its divisors is an integer number (1959705).

Almost surely, 2^13047145 is an apocalyptic number.

It is an amenable number.

13047145 is a deficient number, since it is larger than the sum of its proper divisors (2630495).

13047145 is a wasteful number, since it uses less digits than its factorization.

13047145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3515.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 13047145 is about 3612.0831939478. The cubic root of 13047145 is about 235.4173660494.

The spelling of 13047145 in words is "thirteen million, forty-seven thousand, one hundred forty-five".