872385228890 has 96 divisors (see below), whose sum is σ = 1923891488640. Its totient is φ = 278925825024.

The previous prime is 872385228887. The next prime is 872385228919. The reversal of 872385228890 is 98822583278.

It is a super-2 number, since 2×872385228890² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2007257 + ... + 2402883.

It is an arithmetic number, because the mean of its divisors is an integer number (20040536340).

Almost surely, 2^872385228890 is an apocalyptic number.

872385228890 is an abundant number, since it is smaller than the sum of its proper divisors (1051506259750).

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

872385228890 is a wasteful number, since it uses less digits than its factorization.

872385228890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395784 (or 395767 counting only the distinct ones).

The product of its (nonzero) digits is 30965760, while the sum is 62.

The spelling of 872385228890 in words is "eight hundred seventy-two billion, three hundred eighty-five million, two hundred twenty-eight thousand, eight hundred ninety".