22129806 has 8 divisors (see below), whose sum is σ = 44259624. Its totient is φ = 7376600.

The previous prime is 22129799. The next prime is 22129817. The reversal of 22129806 is 60892122.

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

22129806 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1844145 + ... + 1844156.

It is an arithmetic number, because the mean of its divisors is an integer number (5532453).

Almost surely, 2^22129806 is an apocalyptic number.

22129806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22129806 is a wasteful number, since it uses less digits than its factorization.

22129806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3688306.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 22129806 is about 4704.2327748529. The cubic root of 22129806 is about 280.7539459458.

The spelling of 22129806 in words is "twenty-two million, one hundred twenty-nine thousand, eight hundred six".