12801536 has 40 divisors (see below), whose sum is σ = 27915624. Its totient is φ = 5816320.

The previous prime is 12801533. The next prime is 12801541. The reversal of 12801536 is 63510821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12801533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4496 + ... + 6768.

Almost surely, 2^12801536 is an apocalyptic number.

12801536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12801536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13957812).

12801536 is an abundant number, since it is smaller than the sum of its proper divisors (15114088).

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

12801536 is an equidigital number, since it uses as much as digits as its factorization.

12801536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302 (or 2286 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 12801536 is about 3577.9234200860. The cubic root of 12801536 is about 233.9307755395.

The spelling of 12801536 in words is "twelve million, eight hundred one thousand, five hundred thirty-six".