22878766 has 4 divisors (see below), whose sum is σ = 34318152. Its totient is φ = 11439382.

The previous prime is 22878761. The next prime is 22878769. The reversal of 22878766 is 66787822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66787822 = 2 ⋅33393911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22878761) 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 as a sum of consecutive naturals, namely, 5719690 + ... + 5719693.

It is an arithmetic number, because the mean of its divisors is an integer number (8579538).

Almost surely, 2^22878766 is an apocalyptic number.

22878766 is a deficient number, since it is larger than the sum of its proper divisors (11439386).

22878766 is a wasteful number, since it uses less digits than its factorization.

22878766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11439385.

The product of its digits is 451584, while the sum is 46.

The square root of 22878766 is about 4783.1753051712. The cubic root of 22878766 is about 283.8861459251.

The spelling of 22878766 in words is "twenty-two million, eight hundred seventy-eight thousand, seven hundred sixty-six".