22429857 has 16 divisors (see below), whose sum is σ = 30707712. Its totient is φ = 14556240.

The previous prime is 22429831. The next prime is 22429859. The reversal of 22429857 is 75892422.

It is not a de Polignac number, because 22429857 - 2¹² = 22425761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22429859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37918 + ... + 38504.

It is an arithmetic number, because the mean of its divisors is an integer number (1919232).

Almost surely, 2^22429857 is an apocalyptic number.

It is an amenable number.

22429857 is a deficient number, since it is larger than the sum of its proper divisors (8277855).

22429857 is a wasteful number, since it uses less digits than its factorization.

22429857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908.

The product of its digits is 80640, while the sum is 39.

The square root of 22429857 is about 4736.0169974357. The cubic root of 22429857 is about 282.0171384383.

The spelling of 22429857 in words is "twenty-two million, four hundred twenty-nine thousand, eight hundred fifty-seven".