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2830787977420 = 2251318169599243
BaseRepresentation
bin101001001100011000000…
…111001010000011001100
3101000121202110222220010201
4221030120013022003030
5332334423210234140
610004240202343244
7411342364540144
oct51143007120314
911017673886121
102830787977420
119a1592018717
123987611bab24
13176c32c09660
149b021b79924
154d97e19849a
hex293181ca0cc

2830787977420 has 48 divisors (see below), whose sum is σ = 6402298926240. Its totient is φ = 1045154750976.

The previous prime is 2830787977403. The next prime is 2830787977439. The reversal of 2830787977420 is 247797870382.

It is a super-2 number, since 2×28307879774202 (a number of 26 digits) contains 22 as substring.

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, 4424319 + ... + 5023561.

It is an arithmetic number, because the mean of its divisors is an integer number (133381227630).

Almost surely, 22830787977420 is an apocalyptic number.

2830787977420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2830787977420 is an abundant number, since it is smaller than the sum of its proper divisors (3571510948820).

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

2830787977420 is a wasteful number, since it uses less digits than its factorization.

2830787977420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617434 (or 617432 counting only the distinct ones).

The product of its (nonzero) digits is 66382848, while the sum is 64.

The spelling of 2830787977420 in words is "two trillion, eight hundred thirty billion, seven hundred eighty-seven million, nine hundred seventy-seven thousand, four hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 18169 36338 72676 90845 181690 236197 363380 472394 599243 944788 1180985 1198486 2361970 2396972 2996215 4723940 5992430 7790159 11984860 15580318 31160636 38950795 77901590 155803180 10887646067 21775292134 43550584268 54438230335 108876460670 141539398871 217752921340 283078797742 566157595484 707696994355 1415393988710 2830787977420