22287783 has 8 divisors (see below), whose sum is σ = 33962368. Its totient is φ = 12735864.

The previous prime is 22287767. The next prime is 22287821. The reversal of 22287783 is 38778222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22287783 - 2⁴ = 22287767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22287383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530641 + ... + 530682.

It is an arithmetic number, because the mean of its divisors is an integer number (4245296).

Almost surely, 2^22287783 is an apocalyptic number.

22287783 is a deficient number, since it is larger than the sum of its proper divisors (11674585).

22287783 is a wasteful number, since it uses less digits than its factorization.

22287783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061333.

The product of its digits is 75264, while the sum is 39.

The square root of 22287783 is about 4720.9938572296. The cubic root of 22287783 is about 281.4204308256.

It can be divided in two parts, 2228 and 7783, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 22287783 in words is "twenty-two million, two hundred eighty-seven thousand, seven hundred eighty-three".