700128 has 144 divisors (see below), whose sum is σ = 2476656. Its totient is φ = 184320.

The previous prime is 700127. The next prime is 700129. The reversal of 700128 is 821007.

700128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (700127) and next prime (700129).

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a self number, because there is not a number n which added to its sum of digits gives 700128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (700127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41176 + ... + 41192.

It is an arithmetic number, because the mean of its divisors is an integer number (17199).

2⁷⁰⁰¹²⁸ is an apocalyptic number.

700128 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 700128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1238328).

700128 is an abundant number, since it is smaller than the sum of its proper divisors (1776528).

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

700128 is a wasteful number, since it uses less digits than its factorization.

700128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57 (or 46 counting only the distinct ones).

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

The square root of 700128 is about 836.7365176685. The cubic root of 700128 is about 88.7958118307.

It can be divided in two parts, 700 and 128, that added together give a palindrome (828).

The spelling of 700128 in words is "seven hundred thousand, one hundred twenty-eight".