7772212 has 12 divisors (see below), whose sum is σ = 15544480. Its totient is φ = 3330936.

The previous prime is 7772209. The next prime is 7772221. The reversal of 7772212 is 2122777.

7772212 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 277579 = 7772212 / (7 + 7 + 7 + 2 + 2 + 1 + 2).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 138762 + ... + 138817.

Almost surely, 2^7772212 is an apocalyptic number.

It is an amenable number.

7772212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7772212 is a wasteful number, since it uses less digits than its factorization.

7772212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277590 (or 277588 counting only the distinct ones).

The product of its digits is 2744, while the sum is 28.

The square root of 7772212 is about 2787.8687200082. The cubic root of 7772212 is about 198.0834596971.

Adding to 7772212 its reverse (2122777), we get a palindrome (9894989).

The spelling of 7772212 in words is "seven million, seven hundred seventy-two thousand, two hundred twelve".