12862440 has 48 divisors (see below), whose sum is σ = 41804100. Its totient is φ = 3429888.

The previous prime is 12862439. The next prime is 12862441. The reversal of 12862440 is 4426821.

It is an interprime number because it is at equal distance from previous prime (12862439) and next prime (12862441).

It can be written as a sum of positive squares in 2 ways, for example, as 10771524 + 2090916 = 3282^2 + 1446^2 .

It is not an unprimeable number, because it can be changed into a prime (12862441) 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, 17505 + ... + 18224.

Almost surely, 2^12862440 is an apocalyptic number.

12862440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12862440 is an abundant number, since it is smaller than the sum of its proper divisors (28941660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12862440 is a wasteful number, since it uses less digits than its factorization.

12862440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35746 (or 35739 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 12862440 is about 3586.4244032183. The cubic root of 12862440 is about 234.3011682109.

The spelling of 12862440 in words is "twelve million, eight hundred sixty-two thousand, four hundred forty".