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428857836 = 223116774799
BaseRepresentation
bin11001100011111…
…101100111101100
31002212222020100120
4121203331213230
51334241422321
6110315524540
713425142251
oct3143754754
91085866316
10428857836
11200096270
12bb759750
136ab06744
1440d57428
15279b3ec6
hex198fd9ec

428857836 has 48 divisors (see below), whose sum is σ = 1093478400. Its totient is φ = 129737920.

The previous prime is 428857811. The next prime is 428857841. The reversal of 428857836 is 638758824.

It is a happy 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, 86965 + ... + 91763.

It is an arithmetic number, because the mean of its divisors is an integer number (22780800).

Almost surely, 2428857836 is an apocalyptic number.

It is an amenable number.

428857836 is an abundant number, since it is smaller than the sum of its proper divisors (664620564).

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

428857836 is a wasteful number, since it uses less digits than its factorization.

428857836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5494 (or 5492 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 51.

The square root of 428857836 is about 20708.8830215442. The cubic root of 428857836 is about 754.1153540674.

It can be divided in two parts, 42885 and 7836, that added together give a triangular number (50721 = T318).

The spelling of 428857836 in words is "four hundred twenty-eight million, eight hundred fifty-seven thousand, eight hundred thirty-six".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 132 677 1354 2031 2708 4062 4799 7447 8124 9598 14397 14894 19196 22341 28794 29788 44682 52789 57588 89364 105578 158367 211156 316734 633468 3248923 6497846 9746769 12995692 19493538 35738153 38987076 71476306 107214459 142952612 214428918 428857836