870102 has 40 divisors (see below), whose sum is σ = 2012472. Its totient is φ = 280800.

The previous prime is 870097. The next prime is 870109. The reversal of 870102 is 201078.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 870102.

It is not an unprimeable number, because it can be changed into a prime (870109) by changing a digit.

870102 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6577 + ... + 6707.

2⁸⁷⁰¹⁰² is an apocalyptic number.

870102 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 870102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1006236).

870102 is an abundant number, since it is smaller than the sum of its proper divisors (1142370).

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

870102 is a wasteful number, since it uses less digits than its factorization.

870102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 870102 is about 932.7925814456. The cubic root of 870102 is about 95.4677577259.

The spelling of 870102 in words is "eight hundred seventy thousand, one hundred two".