12749824 has 22 divisors (see below), whose sum is σ = 25489244. Its totient is φ = 6374400.

The previous prime is 12749783. The next prime is 12749827. The reversal of 12749824 is 42894721.

It is not an unprimeable number, because it can be changed into a prime (12749827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5202 + ... + 7249.

It is an arithmetic number, because the mean of its divisors is an integer number (1158602).

Almost surely, 2^12749824 is an apocalyptic number.

It is an amenable number.

12749824 is a deficient number, since it is larger than the sum of its proper divisors (12739420).

12749824 is an equidigital number, since it uses as much as digits as its factorization.

12749824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12471 (or 12453 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 12749824 is about 3570.6895692569. The cubic root of 12749824 is about 233.6153614718.

The spelling of 12749824 in words is "twelve million, seven hundred forty-nine thousand, eight hundred twenty-four".