22136780 has 12 divisors (see below), whose sum is σ = 46487280. Its totient is φ = 8854704.

The previous prime is 22136753. The next prime is 22136783. The reversal of 22136780 is 8763122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22136783) 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 3 ways as a sum of consecutive naturals, for example, 553400 + ... + 553439.

It is an arithmetic number, because the mean of its divisors is an integer number (3873940).

Almost surely, 2^22136780 is an apocalyptic number.

22136780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22136780 is an abundant number, since it is smaller than the sum of its proper divisors (24350500).

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

22136780 is a wasteful number, since it uses less digits than its factorization.

22136780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106848 (or 1106846 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 22136780 is about 4704.9739637962. The cubic root of 22136780 is about 280.7834351692.

The spelling of 22136780 in words is "twenty-two million, one hundred thirty-six thousand, seven hundred eighty".