12887772 has 24 divisors (see below), whose sum is σ = 30366336. Its totient is φ = 4253808.

The previous prime is 12887767. The next prime is 12887773. The reversal of 12887772 is 27778821.

12887772 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (12887773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3978 + ... + 6449.

It is an arithmetic number, because the mean of its divisors is an integer number (1265264).

Almost surely, 2^12887772 is an apocalyptic number.

12887772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12887772 is an abundant number, since it is smaller than the sum of its proper divisors (17478564).

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

12887772 is a wasteful number, since it uses less digits than its factorization.

12887772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10537 (or 10535 counting only the distinct ones).

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

The square root of 12887772 is about 3589.9543172581. The cubic root of 12887772 is about 234.4548825659.

The spelling of 12887772 in words is "twelve million, eight hundred eighty-seven thousand, seven hundred seventy-two".