22404000 has 96 divisors (see below), whose sum is σ = 73434816. Its totient is φ = 5971200.

The previous prime is 22403987. The next prime is 22404061. The reversal of 22404000 is 40422.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

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 15 ways as a sum of consecutive naturals, for example, 11067 + ... + 12933.

It is an arithmetic number, because the mean of its divisors is an integer number (764946).

Almost surely, 2^22404000 is an apocalyptic number.

22404000 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 22404000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36717408).

22404000 is an abundant number, since it is smaller than the sum of its proper divisors (51030816).

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

22404000 is a wasteful number, since it uses less digits than its factorization.

22404000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895 (or 1877 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 22404000 is about 4733.2863847437. The cubic root of 22404000 is about 281.9087275666.

Adding to 22404000 its reverse (40422), we get a palindrome (22444422).

The spelling of 22404000 in words is "twenty-two million, four hundred four thousand".