872543772 has 48 divisors (see below), whose sum is σ = 2274048000. Its totient is φ = 289318320.

The previous prime is 872543761. The next prime is 872543773. The reversal of 872543772 is 277345278.

It is a super-2 number, since 2×872543772² = 1522665268111975968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872543773) 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 15 ways as a sum of consecutive naturals, for example, 522 + ... + 41777.

It is an arithmetic number, because the mean of its divisors is an integer number (47376000).

Almost surely, 2^872543772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 872543772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1137024000).

872543772 is an abundant number, since it is smaller than the sum of its proper divisors (1401504228).

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

872543772 is a wasteful number, since it uses less digits than its factorization.

872543772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42503 (or 42495 counting only the distinct ones).

The product of its digits is 658560, while the sum is 45.

The square root of 872543772 is about 29538.8519072763. The cubic root of 872543772 is about 955.5697821470.

It can be divided in two parts, 872 and 543772, that added together give a square (544644 = 738²).

The spelling of 872543772 in words is "eight hundred seventy-two million, five hundred forty-three thousand, seven hundred seventy-two".