870439028 has 6 divisors (see below), whose sum is σ = 1523268306. Its totient is φ = 435219512.

The previous prime is 870439027. The next prime is 870439051. The reversal of 870439028 is 820934078.

It can be written as a sum of positive squares in only one way, i.e., 811794064 + 58644964 = 28492^2 + 7658^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870439021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108804875 + ... + 108804882.

It is an arithmetic number, because the mean of its divisors is an integer number (253878051).

Almost surely, 2^870439028 is an apocalyptic number.

It is an amenable number.

870439028 is a deficient number, since it is larger than the sum of its proper divisors (652829278).

870439028 is a wasteful number, since it uses less digits than its factorization.

870439028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217609761 (or 217609759 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 870439028 is about 29503.2036904469. The cubic root of 870439028 is about 954.8008239358.

The spelling of 870439028 in words is "eight hundred seventy million, four hundred thirty-nine thousand, twenty-eight".