12893481 has 12 divisors (see below), whose sum is σ = 18761652. Its totient is φ = 8532096.

The previous prime is 12893473. The next prime is 12893483. The reversal of 12893481 is 18439821.

12893481 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 can be written as a sum of positive squares in 2 ways, for example, as 9865881 + 3027600 = 3141^2 + 1740^2 .

It is not a de Polignac number, because 12893481 - 2³ = 12893473 is a prime.

It is a super-2 number, since 2×12893481² = 332483704594722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12893483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3996 + ... + 6461.

It is an arithmetic number, because the mean of its divisors is an integer number (1563471).

Almost surely, 2^12893481 is an apocalyptic number.

It is an amenable number.

12893481 is a deficient number, since it is larger than the sum of its proper divisors (5868171).

12893481 is a wasteful number, since it uses less digits than its factorization.

12893481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10600 (or 10597 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 12893481 is about 3590.7493646870. The cubic root of 12893481 is about 234.4894969102.

The spelling of 12893481 in words is "twelve million, eight hundred ninety-three thousand, four hundred eighty-one".