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689001628830 = 23525789364673
BaseRepresentation
bin10100000011010111011…
…00101000010010011110
32102212102201010020211120
422001223230220102132
542242033404110310
61244304544031410
7100531050133314
oct12015354502236
92385381106746
10689001628830
11246227503649
12b1649302566
134cc84992ac8
14254c273a0b4
1512dc873ab70
hexa06bb2849e

689001628830 has 32 divisors (see below), whose sum is σ = 1660038184224. Its totient is φ = 183018848256.

The previous prime is 689001628829. The next prime is 689001628841. The reversal of 689001628830 is 38826100986.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44674627 + ... + 44690046.

It is an arithmetic number, because the mean of its divisors is an integer number (51876193257).

Almost surely, 2689001628830 is an apocalyptic number.

689001628830 is an abundant number, since it is smaller than the sum of its proper divisors (971036555394).

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

689001628830 is a wasteful number, since it uses less digits than its factorization.

689001628830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89364940.

The product of its (nonzero) digits is 995328, while the sum is 51.

The spelling of 689001628830 in words is "six hundred eighty-nine billion, one million, six hundred twenty-eight thousand, eight hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 257 514 771 1285 1542 2570 3855 7710 89364673 178729346 268094019 446823365 536188038 893646730 1340470095 2680940190 22966720961 45933441922 68900162883 114833604805 137800325766 229667209610 344500814415 689001628830