845226642 has 32 divisors (see below), whose sum is σ = 1828689408. Its totient is φ = 258898176.

The previous prime is 845226637. The next prime is 845226643. The reversal of 845226642 is 246622548.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 845226642.

It is not an unprimeable number, because it can be changed into a prime (845226643) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6903 + ... + 41690.

It is an arithmetic number, because the mean of its divisors is an integer number (57146544).

Almost surely, 2^845226642 is an apocalyptic number.

845226642 is an abundant number, since it is smaller than the sum of its proper divisors (983462766).

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

845226642 is a wasteful number, since it uses less digits than its factorization.

845226642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48834.

The product of its digits is 184320, while the sum is 39.

The square root of 845226642 is about 29072.7818070442. The cubic root of 845226642 is about 945.4917112939.

The spelling of 845226642 in words is "eight hundred forty-five million, two hundred twenty-six thousand, six hundred forty-two".