22018068 has 30 divisors (see below), whose sum is σ = 57560426. Its totient is φ = 7339248.

The previous prime is 22018063. The next prime is 22018069. The reversal of 22018068 is 86081022.

It can be written as a sum of positive squares in only one way, i.e., 13089924 + 8928144 = 3618^2 + 2988^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22018063) 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 9 ways as a sum of consecutive naturals, for example, 33655 + ... + 34302.

Almost surely, 2^22018068 is an apocalyptic number.

It is an amenable number.

22018068 is an abundant number, since it is smaller than the sum of its proper divisors (35542358).

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

22018068 is a wasteful number, since it uses less digits than its factorization.

22018068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67973 (or 67962 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 22018068 is about 4692.3414198031. The cubic root of 22018068 is about 280.2806200252.

The spelling of 22018068 in words is "twenty-two million, eighteen thousand, sixty-eight".