12277788 has 24 divisors (see below), whose sum is σ = 29636880. Its totient is φ = 3951360.

The previous prime is 12277721. The next prime is 12277799. The reversal of 12277788 is 88777221.

12277788 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17293 + ... + 17988.

It is an arithmetic number, because the mean of its divisors is an integer number (1234870).

Almost surely, 2^12277788 is an apocalyptic number.

It is an amenable number.

12277788 is an abundant number, since it is smaller than the sum of its proper divisors (17359092).

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

12277788 is a wasteful number, since it uses less digits than its factorization.

12277788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35317 (or 35315 counting only the distinct ones).

The product of its digits is 87808, while the sum is 42.

The square root of 12277788 is about 3503.9674656024. The cubic root of 12277788 is about 230.6959888252.

The spelling of 12277788 in words is "twelve million, two hundred seventy-seven thousand, seven hundred eighty-eight".