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28941058948940 = 22531343511358887
BaseRepresentation
bin1101001010010010111011…
…00010011011111101001100
310210110201221011021201002222
412211021131202123331030
512243132242042331230
6141315201113234512
76044631264102155
oct645113542337514
9123421834251088
1028941058948940
11924891a315116
1232b4b7a102a38
13131c18cc23148
14720a7cd8492c
15352c53c876e5
hex1a525d89bf4c

28941058948940 has 48 divisors (see below), whose sum is σ = 62738619654144. Its totient is φ = 11202656184000.

The previous prime is 28941058948933. The next prime is 28941058948969. The reversal of 28941058948940 is 4984985014982.

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, 20618177 + ... + 21977063.

It is an arithmetic number, because the mean of its divisors is an integer number (1307054576128).

Almost surely, 228941058948940 is an apocalyptic number.

28941058948940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28941058948940 is an abundant number, since it is smaller than the sum of its proper divisors (33797560705204).

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

28941058948940 is a wasteful number, since it uses less digits than its factorization.

28941058948940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393278 (or 1393276 counting only the distinct ones).

The product of its (nonzero) digits is 238878720, while the sum is 71.

The spelling of 28941058948940 in words is "twenty-eight trillion, nine hundred forty-one billion, fifty-eight million, nine hundred forty-eight thousand, nine hundred forty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 34351 68702 137404 171755 343510 687020 1064881 1358887 2129762 2717774 4259524 5324405 5435548 6794435 10648810 13588870 21297620 27177740 42125497 84250994 168501988 210627485 421254970 842509940 46679127337 93358254674 186716509348 233395636685 466791273370 933582546740 1447052947447 2894105894894 5788211789788 7235264737235 14470529474470 28941058948940