22267788 has 12 divisors (see below), whose sum is σ = 51958200. Its totient is φ = 7422592.

The previous prime is 22267787. The next prime is 22267793. The reversal of 22267788 is 88776222.

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

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22267787) 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, 927813 + ... + 927836.

It is an arithmetic number, because the mean of its divisors is an integer number (4329850).

Almost surely, 2^22267788 is an apocalyptic number.

It is an amenable number.

22267788 is an abundant number, since it is smaller than the sum of its proper divisors (29690412).

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

22267788 is a wasteful number, since it uses less digits than its factorization.

22267788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855656 (or 1855654 counting only the distinct ones).

The product of its digits is 150528, while the sum is 42.

The square root of 22267788 is about 4718.8757135572. The cubic root of 22267788 is about 281.3362489060.

The spelling of 22267788 in words is "twenty-two million, two hundred sixty-seven thousand, seven hundred eighty-eight".