872449140 has 96 divisors (see below), whose sum is σ = 2499194880. Its totient is φ = 227350656.

The previous prime is 872449121. The next prime is 872449147. The reversal of 872449140 is 41944278.

It is a super-2 number, since 2×872449140² = 1522335003773479200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872449147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 487327 + ... + 489113.

It is an arithmetic number, because the mean of its divisors is an integer number (26033280).

Almost surely, 2^872449140 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 872449140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1249597440).

872449140 is an abundant number, since it is smaller than the sum of its proper divisors (1626745740).

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

872449140 is a wasteful number, since it uses less digits than its factorization.

872449140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1981 (or 1979 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 872449140 is about 29537.2500412615. The cubic root of 872449140 is about 955.5352353610.

The spelling of 872449140 in words is "eight hundred seventy-two million, four hundred forty-nine thousand, one hundred forty".