18882772 has 6 divisors (see below), whose sum is σ = 33044858. Its totient is φ = 9441384.

The previous prime is 18882769. The next prime is 18882779. The reversal of 18882772 is 27728881.

It can be written as a sum of positive squares in only one way, i.e., 13883076 + 4999696 = 3726^2 + 2236^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18882779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2360343 + ... + 2360350.

Almost surely, 2^18882772 is an apocalyptic number.

It is an amenable number.

18882772 is a deficient number, since it is larger than the sum of its proper divisors (14162086).

18882772 is a wasteful number, since it uses less digits than its factorization.

18882772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4720697 (or 4720695 counting only the distinct ones).

The product of its digits is 100352, while the sum is 43.

The square root of 18882772 is about 4345.4311638778. The cubic root of 18882772 is about 266.2902404151.

The spelling of 18882772 in words is "eighteen million, eight hundred eighty-two thousand, seven hundred seventy-two".