872032100 has 18 divisors (see below), whose sum is σ = 1892309874. Its totient is φ = 348812800.

The previous prime is 872032069. The next prime is 872032103. The reversal of 872032100 is 1230278.

It can be written as a sum of positive squares in 3 ways, for example, as 13424896 + 858607204 = 3664^2 + 29302^2 .

It is not an unprimeable number, because it can be changed into a prime (872032103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4360061 + ... + 4360260.

Almost surely, 2^872032100 is an apocalyptic number.

It is an amenable number.

872032100 is an abundant number, since it is smaller than the sum of its proper divisors (1020277774).

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

872032100 is a wasteful number, since it uses less digits than its factorization.

872032100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8720335 (or 8720328 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 872032100 is about 29530.1896370477. The cubic root of 872032100 is about 955.3829590818.

Adding to 872032100 its reverse (1230278), we get a palindrome (873262378).

The spelling of 872032100 in words is "eight hundred seventy-two million, thirty-two thousand, one hundred".