531486870 has 48 divisors (see below), whose sum is σ = 1311076368. Its totient is φ = 137888640.

The previous prime is 531486863. The next prime is 531486881. The reversal of 531486870 is 78684135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34600 + ... + 47540.

It is an arithmetic number, because the mean of its divisors is an integer number (27314091).

Almost surely, 2^531486870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531486870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (655538184).

531486870 is an abundant number, since it is smaller than the sum of its proper divisors (779589498).

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

531486870 is a wasteful number, since it uses less digits than its factorization.

531486870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13025 (or 12988 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 531486870 is about 23053.9990023423. Note that the first 3 decimals coincide. The cubic root of 531486870 is about 810.0233037039.

The spelling of 531486870 in words is "five hundred thirty-one million, four hundred eighty-six thousand, eight hundred seventy".