22281867 has 12 divisors (see below), whose sum is σ = 32226480. Its totient is φ = 14835408.

The previous prime is 22281829. The next prime is 22281877. The reversal of 22281867 is 76818222.

It is a happy number.

It is not a de Polignac number, because 22281867 - 2¹⁴ = 22265483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22281877) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10933 + ... + 12809.

It is an arithmetic number, because the mean of its divisors is an integer number (2685540).

Almost surely, 2^22281867 is an apocalyptic number.

22281867 is a deficient number, since it is larger than the sum of its proper divisors (9944613).

22281867 is a wasteful number, since it uses less digits than its factorization.

22281867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202 (or 3199 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 22281867 is about 4720.3672526616. The cubic root of 22281867 is about 281.3955288333.

It can be divided in two parts, 2228 and 1867, that added together give a triangular number (4095 = T₉₀).

The spelling of 22281867 in words is "twenty-two million, two hundred eighty-one thousand, eight hundred sixty-seven".