12787794 has 40 divisors (see below), whose sum is σ = 28873020. Its totient is φ = 4230144.

The previous prime is 12787783. The next prime is 12787799. The reversal of 12787794 is 49778721.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12638025 + 149769 = 3555^2 + 387^2 .

It is not an unprimeable number, because it can be changed into a prime (12787799) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31062 + ... + 31470.

Almost surely, 2^12787794 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12787794, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14436510).

12787794 is an abundant number, since it is smaller than the sum of its proper divisors (16085226).

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

12787794 is a wasteful number, since it uses less digits than its factorization.

12787794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616 (or 607 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 12787794 is about 3576.0025167776. The cubic root of 12787794 is about 233.8470400752.

The spelling of 12787794 in words is "twelve million, seven hundred eighty-seven thousand, seven hundred ninety-four".