12778790 has 8 divisors (see below), whose sum is σ = 23001840. Its totient is φ = 5111512.

The previous prime is 12778771. The next prime is 12778813. The reversal of 12778790 is 9787721.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638930 + ... + 638949.

It is an arithmetic number, because the mean of its divisors is an integer number (2875230).

Almost surely, 2^12778790 is an apocalyptic number.

12778790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12778790 is a deficient number, since it is larger than the sum of its proper divisors (10223050).

12778790 is a wasteful number, since it uses less digits than its factorization.

12778790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277886.

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

The square root of 12778790 is about 3574.7433474307. The cubic root of 12778790 is about 233.7921425919.

The spelling of 12778790 in words is "twelve million, seven hundred seventy-eight thousand, seven hundred ninety".