22802780 has 192 divisors, whose sum is σ = 69092352. Its totient is φ = 6082560.

The previous prime is 22802749. The next prime is 22802783. The reversal of 22802780 is 8720822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22802783) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 340307 + ... + 340373.

It is an arithmetic number, because the mean of its divisors is an integer number (359856).

Almost surely, 2^22802780 is an apocalyptic number.

22802780 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 22802780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34546176).

22802780 is an abundant number, since it is smaller than the sum of its proper divisors (46289572).

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

22802780 is a wasteful number, since it uses less digits than its factorization.

22802780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 22802780 is about 4775.2256491186. The cubic root of 22802780 is about 283.5715121417.

The spelling of 22802780 in words is "twenty-two million, eight hundred two thousand, seven hundred eighty".