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30268418378420 = 22518110723779767
BaseRepresentation
bin1101110000111011010100…
…10100110100101010110100
310222011122002010020011221002
412320131222110310222310
512431404210101102140
6144213041444342432
76242551424066225
oct670355224645264
9128148063204832
1030268418378420
11970a845095652
12348a2800a4a18
1313b73b83062c1
14768ddbdb524c
1537753ea90415
hex1b876a534ab4

30268418378420 has 48 divisors (see below), whose sum is σ = 63920901652608. Its totient is φ = 12039337514880.

The previous prime is 30268418378413. The next prime is 30268418378477. The reversal of 30268418378420 is 2487381486203.

It is a super-2 number, since 2×302684183784202 (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38427377 + ... + 39207143.

It is an arithmetic number, because the mean of its divisors is an integer number (1331685451096).

Almost surely, 230268418378420 is an apocalyptic number.

It is an amenable number.

30268418378420 is an abundant number, since it is smaller than the sum of its proper divisors (33652483274188).

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

30268418378420 is a wasteful number, since it uses less digits than its factorization.

30268418378420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790680 (or 790678 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 56.

The spelling of 30268418378420 in words is "thirty trillion, two hundred sixty-eight billion, four hundred eighteen million, three hundred seventy-eight thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 181 362 724 905 1810 3620 10723 21446 42892 53615 107230 214460 779767 1559534 1940863 3119068 3881726 3898835 7763452 7797670 9704315 15595340 19408630 38817260 141137827 282275654 564551308 705689135 1411378270 2822756540 8361441541 16722883082 33445766164 41807207705 83614415410 167228830820 1513420918921 3026841837842 6053683675684 7567104594605 15134209189210 30268418378420