12772242 has 60 divisors (see below), whose sum is σ = 33312510. Its totient is φ = 3646944.

The previous prime is 12772231. The next prime is 12772259. The reversal of 12772242 is 24227721.

It can be written as a sum of positive squares in only one way, i.e., 7338681 + 5433561 = 2709^2 + 2331^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 7134 + ... + 8742.

Almost surely, 2^12772242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12772242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16656255).

12772242 is an abundant number, since it is smaller than the sum of its proper divisors (20540268).

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

12772242 is a wasteful number, since it uses less digits than its factorization.

12772242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637 (or 1621 counting only the distinct ones).

The product of its digits is 3136, while the sum is 27.

The square root of 12772242 is about 3573.8273601281. The cubic root of 12772242 is about 233.7522031687.

Adding to 12772242 its reverse (24227721), we get a palindrome (36999963).

The spelling of 12772242 in words is "twelve million, seven hundred seventy-two thousand, two hundred forty-two".