12787893 has 48 divisors (see below), whose sum is σ = 21228480. Its totient is φ = 7368192.

The previous prime is 12787889. The next prime is 12787897. The reversal of 12787893 is 39878721.

It is an interprime number because it is at equal distance from previous prime (12787889) and next prime (12787897).

It is not a de Polignac number, because 12787893 - 2² = 12787889 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12787897) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 154030 + ... + 154112.

It is an arithmetic number, because the mean of its divisors is an integer number (442260).

Almost surely, 2^12787893 is an apocalyptic number.

It is an amenable number.

12787893 is a deficient number, since it is larger than the sum of its proper divisors (8440587).

12787893 is a wasteful number, since it uses less digits than its factorization.

12787893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 175 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 12787893 is about 3576.0163590230. The cubic root of 12787893 is about 233.8476435360.

The spelling of 12787893 in words is "twelve million, seven hundred eighty-seven thousand, eight hundred ninety-three".