12787790 has 8 divisors (see below), whose sum is σ = 23018040. Its totient is φ = 5115112.

The previous prime is 12787783. The next prime is 12787799. The reversal of 12787790 is 9778721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 639380 + ... + 639399.

It is an arithmetic number, because the mean of its divisors is an integer number (2877255).

Almost surely, 2^12787790 is an apocalyptic number.

12787790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12787790 is a deficient number, since it is larger than the sum of its proper divisors (10230250).

12787790 is a wasteful number, since it uses less digits than its factorization.

12787790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278786.

The product of its (nonzero) digits is 49392, while the sum is 41.

The square root of 12787790 is about 3576.0019574939. The cubic root of 12787790 is about 233.8470156929.

The spelling of 12787790 in words is "twelve million, seven hundred eighty-seven thousand, seven hundred ninety".