13047975 has 18 divisors (see below), whose sum is σ = 23370776. Its totient is φ = 6958800.

The previous prime is 13047971. The next prime is 13047977. The reversal of 13047975 is 57974031.

It is a happy number.

13047975 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13047975 - 2² = 13047971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13047971) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 28771 + ... + 29220.

Almost surely, 2^13047975 is an apocalyptic number.

13047975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13047975 is a deficient number, since it is larger than the sum of its proper divisors (10322801).

13047975 is a wasteful number, since it uses less digits than its factorization.

13047975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58007 (or 57999 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 13047975 is about 3612.1980842695. The cubic root of 13047975 is about 235.4223580041.

The spelling of 13047975 in words is "thirteen million, forty-seven thousand, nine hundred seventy-five".