8722236 has 12 divisors (see below), whose sum is σ = 20351912. Its totient is φ = 2907408.

The previous prime is 8722223. The next prime is 8722237. The reversal of 8722236 is 6322278.

It is a tau number, because it is divible by the number of its divisors (12).

It is a d-powerful number, because it can be written as 8² + 7⁴ + 2¹⁶ + 2¹⁸ + 2²³ + 3⁷ + 6⁴ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8722237) by changing a digit.

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, 363415 + ... + 363438.

Almost surely, 2^8722236 is an apocalyptic number.

It is an amenable number.

8722236 is an abundant number, since it is smaller than the sum of its proper divisors (11629676).

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

8722236 is a wasteful number, since it uses less digits than its factorization.

8722236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726860 (or 726858 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 8722236 is about 2953.3431903522. The cubic root of 8722236 is about 205.8460847967.

The spelling of 8722236 in words is "eight million, seven hundred twenty-two thousand, two hundred thirty-six".