8772220 has 12 divisors (see below), whose sum is σ = 18421704. Its totient is φ = 3508880.

The previous prime is 8772209. The next prime is 8772229. The reversal of 8772220 is 222778.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8772229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219286 + ... + 219325.

It is an arithmetic number, because the mean of its divisors is an integer number (1535142).

Almost surely, 2^8772220 is an apocalyptic number.

It is an amenable number.

8772220 is an abundant number, since it is smaller than the sum of its proper divisors (9649484).

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

8772220 is a wasteful number, since it uses less digits than its factorization.

8772220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438620 (or 438618 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 8772220 is about 2961.7933756425. The cubic root of 8772220 is about 206.2385460428.

Adding to 8772220 its reverse (222778), we get a palindrome (8994998).

The spelling of 8772220 in words is "eight million, seven hundred seventy-two thousand, two hundred twenty".