22847280 has 80 divisors (see below), whose sum is σ = 73923840. Its totient is φ = 5826304.

The previous prime is 22847263. The next prime is 22847287. The reversal of 22847280 is 8274822.

It is a tau number, because it is divible by the number of its divisors (80).

It is a zygodrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (22847287) 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 15 ways as a sum of consecutive naturals, for example, 3451 + ... + 7589.

It is an arithmetic number, because the mean of its divisors is an integer number (924048).

Almost surely, 2^22847280 is an apocalyptic number.

22847280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

22847280 is the 2760-th octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22847280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36961920).

22847280 is an abundant number, since it is smaller than the sum of its proper divisors (51076560).

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

22847280 is a wasteful number, since it uses less digits than its factorization.

22847280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4178 (or 4172 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 22847280 is about 4779.8828437526. The cubic root of 22847280 is about 283.7558570987.

The spelling of 22847280 in words is "twenty-two million, eight hundred forty-seven thousand, two hundred eighty".