870724281 has 8 divisors (see below), whose sum is σ = 1326817984. Its totient is φ = 497556720.

The previous prime is 870724259. The next prime is 870724289. The reversal of 870724281 is 182427078.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 870724281 - 2¹¹ = 870722233 is a prime.

It is a super-2 number, since 2×870724281² = 1516321547045933922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870724289) 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 7 ways as a sum of consecutive naturals, for example, 20731510 + ... + 20731551.

It is an arithmetic number, because the mean of its divisors is an integer number (165852248).

Almost surely, 2^870724281 is an apocalyptic number.

It is an amenable number.

870724281 is a deficient number, since it is larger than the sum of its proper divisors (456093703).

870724281 is a wasteful number, since it uses less digits than its factorization.

870724281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41463071.

The product of its (nonzero) digits is 50176, while the sum is 39.

The square root of 870724281 is about 29508.0375660599. The cubic root of 870724281 is about 954.9051123253.

The spelling of 870724281 in words is "eight hundred seventy million, seven hundred twenty-four thousand, two hundred eighty-one".