22776940 has 48 divisors (see below), whose sum is σ = 52303104. Its totient is φ = 8294400.

The previous prime is 22776931. The next prime is 22776959. The reversal of 22776940 is 4967722.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22776940.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9460 + ... + 11620.

It is an arithmetic number, because the mean of its divisors is an integer number (1089648).

Almost surely, 2^22776940 is an apocalyptic number.

22776940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22776940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26151552).

22776940 is an abundant number, since it is smaller than the sum of its proper divisors (29526164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22776940 is a wasteful number, since it uses less digits than its factorization.

22776940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218 (or 2216 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 22776940 is about 4772.5192508779. The cubic root of 22776940 is about 283.4643577005.

It can be divided in two parts, 22776 and 940, that added together give a square (23716 = 154²).

The spelling of 22776940 in words is "twenty-two million, seven hundred seventy-six thousand, nine hundred forty".