870019028 has 6 divisors (see below), whose sum is σ = 1522533306. Its totient is φ = 435009512.

The previous prime is 870019001. The next prime is 870019069. The reversal of 870019028 is 820910078.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 790059664 + 79959364 = 28108^2 + 8942^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108752375 + ... + 108752382.

It is an arithmetic number, because the mean of its divisors is an integer number (253755551).

Almost surely, 2^870019028 is an apocalyptic number.

It is an amenable number.

870019028 is a deficient number, since it is larger than the sum of its proper divisors (652514278).

870019028 is a wasteful number, since it uses less digits than its factorization.

870019028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217504761 (or 217504759 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 870019028 is about 29496.0849605503. The cubic root of 870019028 is about 954.6472306152.

The spelling of 870019028 in words is "eight hundred seventy million, nineteen thousand, twenty-eight".