22780368 has 120 divisors (see below), whose sum is σ = 70502432. Its totient is φ = 6822144.

The previous prime is 22780343. The next prime is 22780393. The reversal of 22780368 is 86308722.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22780343) and next prime (22780393).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 80355 + ... + 80637.

Almost surely, 2^22780368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22780368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35251216).

22780368 is an abundant number, since it is smaller than the sum of its proper divisors (47722064).

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

22780368 is a wasteful number, since it uses less digits than its factorization.

22780368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 22780368 is about 4772.8783768288. The cubic root of 22780368 is about 283.4785777417.

The spelling of 22780368 in words is "twenty-two million, seven hundred eighty thousand, three hundred sixty-eight".