12017772 has 36 divisors (see below), whose sum is σ = 32716320. Its totient is φ = 3697632.

The previous prime is 12017749. The next prime is 12017773. The reversal of 12017772 is 27771021.

12017772 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 tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (12017773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12372 + ... + 13307.

Almost surely, 2^12017772 is an apocalyptic number.

12017772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12017772 is an abundant number, since it is smaller than the sum of its proper divisors (20698548).

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

12017772 is a wasteful number, since it uses less digits than its factorization.

12017772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25702 (or 25697 counting only the distinct ones).

The product of its (nonzero) digits is 1372, while the sum is 27.

The square root of 12017772 is about 3466.6658333332. The cubic root of 12017772 is about 229.0558142145.

Adding to 12017772 its reverse (27771021), we get a palindrome (39788793).

The spelling of 12017772 in words is "twelve million, seventeen thousand, seven hundred seventy-two".