872801220 has 24 divisors (see below), whose sum is σ = 2443843584. Its totient is φ = 232746976.

The previous prime is 872801203. The next prime is 872801227. The reversal of 872801220 is 22108278.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (872801227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7273284 + ... + 7273403.

It is an arithmetic number, because the mean of its divisors is an integer number (101826816).

Almost surely, 2^872801220 is an apocalyptic number.

It is an amenable number.

872801220 is an abundant number, since it is smaller than the sum of its proper divisors (1571042364).

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

872801220 is a wasteful number, since it uses less digits than its factorization.

872801220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14546699 (or 14546697 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 872801220 is about 29543.2093720367. The cubic root of 872801220 is about 955.6637546390.

Adding to 872801220 its reverse (22108278), we get a palindrome (894909498).

The spelling of 872801220 in words is "eight hundred seventy-two million, eight hundred one thousand, two hundred twenty".