12497784 has 64 divisors (see below), whose sum is σ = 34503840. Its totient is φ = 3747840.

The previous prime is 12497783. The next prime is 12497789. The reversal of 12497784 is 48779421.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12497783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12304 + ... + 13280.

Almost surely, 2^12497784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12497784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17251920).

12497784 is an abundant number, since it is smaller than the sum of its proper divisors (22006056).

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

12497784 is a wasteful number, since it uses less digits than its factorization.

12497784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040 (or 1036 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 12497784 is about 3535.2205023167. The cubic root of 12497784 is about 232.0657265223.

The spelling of 12497784 in words is "twelve million, four hundred ninety-seven thousand, seven hundred eighty-four".