855638022 has 16 divisors (see below), whose sum is σ = 1711567872. Its totient is φ = 285164040.

The previous prime is 855637957. The next prime is 855638023. The reversal of 855638022 is 220836558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855638023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52003 + ... + 66449.

It is an arithmetic number, because the mean of its divisors is an integer number (106972992).

Almost surely, 2^855638022 is an apocalyptic number.

855638022 is an abundant number, since it is smaller than the sum of its proper divisors (855929850).

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

855638022 is a wasteful number, since it uses less digits than its factorization.

855638022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24323.

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 855638022 is about 29251.2909458711. The cubic root of 855638022 is about 949.3580231512.

The spelling of 855638022 in words is "eight hundred fifty-five million, six hundred thirty-eight thousand, twenty-two".