22280064 has 64 divisors (see below), whose sum is σ = 62681040. Its totient is φ = 6987776.

The previous prime is 22280053. The next prime is 22280099. The reversal of 22280064 is 46008222.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 7 ways as a sum of consecutive naturals, for example, 4822 + ... + 8234.

Almost surely, 2^22280064 is an apocalyptic number.

22280064 is a gapful number since it is divisible by the number (24) 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 22280064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31340520).

22280064 is an abundant number, since it is smaller than the sum of its proper divisors (40400976).

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

22280064 is a wasteful number, since it uses less digits than its factorization.

22280064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3447 (or 3435 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 22280064 is about 4720.1762678951. The cubic root of 22280064 is about 281.3879386581.

Adding to 22280064 its reverse (46008222), we get a palindrome (68288286).

The spelling of 22280064 in words is "twenty-two million, two hundred eighty thousand, sixty-four".