22528406 has 8 divisors (see below), whose sum is σ = 33988464. Its totient is φ = 11198920.

The previous prime is 22528399. The next prime is 22528409. The reversal of 22528406 is 60482522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22528409) by changing a digit.

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, 32210 + ... + 32901.

It is an arithmetic number, because the mean of its divisors is an integer number (4248558).

Almost surely, 2^22528406 is an apocalyptic number.

22528406 is a deficient number, since it is larger than the sum of its proper divisors (11460058).

22528406 is a wasteful number, since it uses less digits than its factorization.

22528406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65286.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 22528406 is about 4746.4098011023. The cubic root of 22528406 is about 282.4295634558.

The spelling of 22528406 in words is "twenty-two million, five hundred twenty-eight thousand, four hundred six".