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190928372820 = 22356661477727
BaseRepresentation
bin1011000111010000110…
…1111100010001010100
3200020211010102021110120
42301310031330101110
511112010130412240
6223413345351540
716536245251233
oct2616415742124
9606733367416
10190928372820
1173a770a8459
12310056385b0
1315009a80843
149353382b1a
154e76d49ad0
hex2c7437c454

190928372820 has 48 divisors (see below), whose sum is σ = 534680821248. Its totient is φ = 50906482560.

The previous prime is 190928372807. The next prime is 190928372867. The reversal of 190928372820 is 28273829091.

It is a congruent 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, 160797 + ... + 638523.

It is an arithmetic number, because the mean of its divisors is an integer number (11139183776).

Almost surely, 2190928372820 is an apocalyptic number.

190928372820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190928372820 is an abundant number, since it is smaller than the sum of its proper divisors (343752448428).

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

190928372820 is a wasteful number, since it uses less digits than its factorization.

190928372820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484400 (or 484398 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 190928372820 in words is "one hundred ninety billion, nine hundred twenty-eight million, three hundred seventy-two thousand, eight hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 6661 13322 19983 26644 33305 39966 66610 79932 99915 133220 199830 399660 477727 955454 1433181 1910908 2388635 2866362 4777270 5732724 7165905 9554540 14331810 28663620 3182139547 6364279094 9546418641 12728558188 15910697735 19092837282 31821395470 38185674564 47732093205 63642790940 95464186410 190928372820