870529538 has 18 divisors (see below), whose sum is σ = 1351283337. Its totient is φ = 420598080.

The previous prime is 870529487. The next prime is 870529547. The reversal of 870529538 is 835925078.

It can be written as a sum of positive squares in 2 ways, for example, as 843728209 + 26801329 = 29047^2 + 5177^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=20863.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 870529492 and 870529501.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1293170 + ... + 1293842.

Almost surely, 2^870529538 is an apocalyptic number.

870529538 is a deficient number, since it is larger than the sum of its proper divisors (480753799).

870529538 is an frugal number, since it uses more digits than its factorization.

870529538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 47.

The square root of 870529538 is about 29504.7375517899. The cubic root of 870529538 is about 954.8339168252.

The spelling of 870529538 in words is "eight hundred seventy million, five hundred twenty-nine thousand, five hundred thirty-eight".