22920064 has 32 divisors (see below), whose sum is σ = 45912240. Its totient is φ = 11397120.

The previous prime is 22920049. The next prime is 22920077. The reversal of 22920064 is 46002922.

It is a tau number, because it is divible by the number of its divisors (32).

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 3 ways as a sum of consecutive naturals, for example, 30477 + ... + 31219.

Almost surely, 2^22920064 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 22920064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22956120).

22920064 is an abundant number, since it is smaller than the sum of its proper divisors (22992176).

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

22920064 is an equidigital number, since it uses as much as digits as its factorization.

22920064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998 (or 986 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 22920064 is about 4787.4903655256. The cubic root of 22920064 is about 284.0568556407.

Adding to 22920064 its reverse (46002922), we get a palindrome (68922986).

The spelling of 22920064 in words is "twenty-two million, nine hundred twenty thousand, sixty-four".