22840000 has 70 divisors (see below), whose sum is σ = 56734964. Its totient is φ = 9120000.

The previous prime is 22839997. The next prime is 22840001. The reversal of 22840000 is 4822.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (22840001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 39715 + ... + 40285.

Almost surely, 2^22840000 is an apocalyptic number.

22840000 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 22840000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28367482).

22840000 is an abundant number, since it is smaller than the sum of its proper divisors (33894964).

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

22840000 is an frugal number, since it uses more digits than its factorization.

22840000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603 (or 578 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 22840000 is about 4779.1212581394. The cubic root of 22840000 is about 283.7257154788.

Adding to 22840000 its reverse (4822), we get a palindrome (22844822).

The spelling of 22840000 in words is "twenty-two million, eight hundred forty thousand".