12277790 has 32 divisors (see below), whose sum is σ = 25850880. Its totient is φ = 4110624.

The previous prime is 12277721. The next prime is 12277799. The reversal of 12277790 is 9777221.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 12277790.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12277799) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 971 + ... + 5049.

It is an arithmetic number, because the mean of its divisors is an integer number (807840).

Almost surely, 2^12277790 is an apocalyptic number.

12277790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12277790 is an abundant number, since it is smaller than the sum of its proper divisors (13573090).

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

12277790 is a wasteful number, since it uses less digits than its factorization.

12277790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4136.

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 12277790 is about 3503.9677509932. The cubic root of 12277790 is about 230.6960013516.

The spelling of 12277790 in words is "twelve million, two hundred seventy-seven thousand, seven hundred ninety".