22989782 has 4 divisors (see below), whose sum is σ = 34484676. Its totient is φ = 11494890.

The previous prime is 22989781. The next prime is 22989847. The reversal of 22989782 is 28798922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28798922 = 2 ⋅14399461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22989781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5747444 + ... + 5747447.

It is an arithmetic number, because the mean of its divisors is an integer number (8621169).

Almost surely, 2^22989782 is an apocalyptic number.

22989782 is a deficient number, since it is larger than the sum of its proper divisors (11494894).

22989782 is a wasteful number, since it uses less digits than its factorization.

22989782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11494893.

The product of its digits is 290304, while the sum is 47.

The square root of 22989782 is about 4794.7661048272. The cubic root of 22989782 is about 284.3445777865.

It can be divided in two parts, 229 and 89782, that multiplied together give a triangular number (20560078 = T₆₄₁₂).

The spelling of 22989782 in words is "twenty-two million, nine hundred eighty-nine thousand, seven hundred eighty-two".