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30057528228 = 22371371387679
BaseRepresentation
bin11011111111100100…
…010111101110100100
32212120202112122021020
4123333210113232210
5443024211400403
621450325051140
72112565526430
oct337744275644
985522478236
1030057528228
1111824766922
1259aa256ab0
132ab0287c80
141651d419c0
15badbde453
hex6ff917ba4

30057528228 has 96 divisors (see below), whose sum is σ = 87535042560. Its totient is φ = 7815588480.

The previous prime is 30057528227. The next prime is 30057528247. The reversal of 30057528228 is 82282575003.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 30057528228.

It is not an unprimeable number, because it can be changed into a prime (30057528227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116308 + ... + 271371.

It is an arithmetic number, because the mean of its divisors is an integer number (911823360).

Almost surely, 230057528228 is an apocalyptic number.

It is an amenable number.

30057528228 is an abundant number, since it is smaller than the sum of its proper divisors (57477514332).

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

30057528228 is a wasteful number, since it uses less digits than its factorization.

30057528228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387777 (or 387775 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The spelling of 30057528228 in words is "thirty billion, fifty-seven million, five hundred twenty-eight thousand, two hundred twenty-eight".

Divisors: 1 2 3 4 6 7 12 13 14 21 26 28 39 42 52 71 78 84 91 142 156 182 213 273 284 364 426 497 546 852 923 994 1092 1491 1846 1988 2769 2982 3692 5538 5964 6461 11076 12922 19383 25844 38766 77532 387679 775358 1163037 1550716 2326074 2713753 4652148 5039827 5427506 8141259 10079654 10855012 15119481 16282518 20159308 27525209 30238962 32565036 35278789 55050418 60477924 70557578 82575627 105836367 110100836 141115156 165151254 192676463 211672734 330302508 357827717 385352926 423345468 578029389 715655434 770705852 1073483151 1156058778 1431310868 2146966302 2312117556 2504794019 4293932604 5009588038 7514382057 10019176076 15028764114 30057528228