22773289 has 36 divisors (see below), whose sum is σ = 30566592. Its totient is φ = 16872240.

The previous prime is 22773281. The next prime is 22773307. The reversal of 22773289 is 98237722.

It is not a de Polignac number, because 22773289 - 2³ = 22773281 is a prime.

It is a super-3 number, since 3×22773289³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22773281) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 136284 + ... + 136450.

It is an arithmetic number, because the mean of its divisors is an integer number (849072).

Almost surely, 2^22773289 is an apocalyptic number.

It is an amenable number.

22773289 is a deficient number, since it is larger than the sum of its proper divisors (7793303).

22773289 is a wasteful number, since it uses less digits than its factorization.

22773289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226 (or 208 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The square root of 22773289 is about 4772.1367331626. The cubic root of 22773289 is about 283.4492110409.

Adding to 22773289 its product of digits (84672), we get a square (22857961 = 4781²).

The spelling of 22773289 in words is "twenty-two million, seven hundred seventy-three thousand, two hundred eighty-nine".