12890775 has 12 divisors (see below), whose sum is σ = 21312872. Its totient is φ = 6875040.

The previous prime is 12890767. The next prime is 12890783. The reversal of 12890775 is 57709821.

12890775 is nontrivially palindromic in base 11.

12890775 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12890767) and next prime (12890783).

It is not a de Polignac number, because 12890775 - 2³ = 12890767 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85864 + ... + 86013.

Almost surely, 2^12890775 is an apocalyptic number.

12890775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12890775 is a deficient number, since it is larger than the sum of its proper divisors (8422097).

12890775 is a wasteful number, since it uses less digits than its factorization.

12890775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171890 (or 171885 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 12890775 is about 3590.3725433442. The cubic root of 12890775 is about 234.4730913852.

The spelling of 12890775 in words is "twelve million, eight hundred ninety thousand, seven hundred seventy-five".