12776890 has 32 divisors (see below), whose sum is σ = 26409600. Its totient is φ = 4359744.

The previous prime is 12776879. The next prime is 12776921. The reversal of 12776890 is 9867721.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24169 + ... + 24691.

It is an arithmetic number, because the mean of its divisors is an integer number (825300).

Almost surely, 2^12776890 is an apocalyptic number.

12776890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12776890 is an abundant number, since it is smaller than the sum of its proper divisors (13632710).

12776890 is a wasteful number, since it uses less digits than its factorization.

12776890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 12776890 is about 3574.4775842072. The cubic root of 12776890 is about 233.7805549771.

The spelling of 12776890 in words is "twelve million, seven hundred seventy-six thousand, eight hundred ninety".