842887220 has 36 divisors (see below), whose sum is σ = 2059055460. Its totient is φ = 288989568.

The previous prime is 842887207. The next prime is 842887229. The reversal of 842887220 is 22788248.

It can be written as a sum of positive squares in 2 ways, for example, as 581870884 + 261016336 = 24122^2 + 16156^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842887229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 429065 + ... + 431024.

It is an arithmetic number, because the mean of its divisors is an integer number (57195985).

Almost surely, 2^842887220 is an apocalyptic number.

It is an amenable number.

842887220 is an abundant number, since it is smaller than the sum of its proper divisors (1216168240).

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

842887220 is a wasteful number, since it uses less digits than its factorization.

842887220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860112 (or 860103 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 41.

The square root of 842887220 is about 29032.5200421872. The cubic root of 842887220 is about 944.6185932252.

The spelling of 842887220 in words is "eight hundred forty-two million, eight hundred eighty-seven thousand, two hundred twenty".