22277268 has 144 divisors (see below), whose sum is σ = 65921856. Its totient is φ = 6531840.

The previous prime is 22277263. The next prime is 22277273. The reversal of 22277268 is 86277222.

It is an interprime number because it is at equal distance from previous prime (22277263) and next prime (22277273).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22277263) 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 47 ways as a sum of consecutive naturals, for example, 518055 + ... + 518097.

Almost surely, 2^22277268 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22277268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32960928).

22277268 is an abundant number, since it is smaller than the sum of its proper divisors (43644588).

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

22277268 is a wasteful number, since it uses less digits than its factorization.

22277268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 102 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 22277268 is about 4719.8800832225. The cubic root of 22277268 is about 281.3761673935.

The spelling of 22277268 in words is "twenty-two million, two hundred seventy-seven thousand, two hundred sixty-eight".