844250020 has 12 divisors (see below), whose sum is σ = 1772925084. Its totient is φ = 337700000.

The previous prime is 844249997. The next prime is 844250027. The reversal of 844250020 is 20052448.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 136796416 + 707453604 = 11696^2 + 26598^2 .

It is not an unprimeable number, because it can be changed into a prime (844250027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21106231 + ... + 21106270.

It is an arithmetic number, because the mean of its divisors is an integer number (147743757).

Almost surely, 2^844250020 is an apocalyptic number.

It is an amenable number.

844250020 is an abundant number, since it is smaller than the sum of its proper divisors (928675064).

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

844250020 is a wasteful number, since it uses less digits than its factorization.

844250020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42212510 (or 42212508 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 844250020 is about 29055.9807956985. The cubic root of 844250020 is about 945.1274129968.

The spelling of 844250020 in words is "eight hundred forty-four million, two hundred fifty thousand, twenty".