22409408 has 28 divisors (see below), whose sum is σ = 50822352. Its totient is φ = 9603840.

The previous prime is 22409393. The next prime is 22409437. The reversal of 22409408 is 80490422.

It is a tau number, because it is divible by the number of its divisors (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24563 + ... + 25458.

It is an arithmetic number, because the mean of its divisors is an integer number (1815084).

Almost surely, 2^22409408 is an apocalyptic number.

22409408 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22409408 is an abundant number, since it is smaller than the sum of its proper divisors (28412944).

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

22409408 is an equidigital number, since it uses as much as digits as its factorization.

22409408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50040 (or 50030 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 22409408 is about 4733.8576235455. The cubic root of 22409408 is about 281.9314086317.

The spelling of 22409408 in words is "twenty-two million, four hundred nine thousand, four hundred eight".