22782755 has 8 divisors (see below), whose sum is σ = 27412992. Its totient is φ = 18177088.

The previous prime is 22782751. The next prime is 22782763. The reversal of 22782755 is 55728722.

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

It is a cyclic number.

It is not a de Polignac number, because 22782755 - 2² = 22782751 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22782751) 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 7 ways as a sum of consecutive naturals, for example, 4034 + ... + 7863.

It is an arithmetic number, because the mean of its divisors is an integer number (3426624).

Almost surely, 2^22782755 is an apocalyptic number.

22782755 is a deficient number, since it is larger than the sum of its proper divisors (4630237).

22782755 is a wasteful number, since it uses less digits than its factorization.

22782755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12285.

The product of its digits is 78400, while the sum is 38.

The square root of 22782755 is about 4773.1284290285. The cubic root of 22782755 is about 283.4884786607.

It can be divided in two parts, 227 and 82755, that multiplied together give a triangular number (18785385 = T₆₁₂₉).

The spelling of 22782755 in words is "twenty-two million, seven hundred eighty-two thousand, seven hundred fifty-five".