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1994792434780 = 225234439788951
BaseRepresentation
bin11101000001110010111…
…001001111110001011100
321001200220111220010110011
4131001302321033301130
5230140313330403110
64124221152453004
7264055546634125
oct35016271176134
97050814803404
101994792434780
116a9a94363a82
1228272bb4a164
131161536ccc32
146c796ddb04c
1536d50c2548a
hex1d072e4fc5c

1994792434780 has 48 divisors (see below), whose sum is σ = 4381065045504. Its totient is φ = 761501998400.

The previous prime is 1994792434741. The next prime is 1994792434799. The reversal of 1994792434780 is 874342974991.

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, 4690696 + ... + 5098255.

It is an arithmetic number, because the mean of its divisors is an integer number (91272188448).

Almost surely, 21994792434780 is an apocalyptic number.

1994792434780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1994792434780 is an abundant number, since it is smaller than the sum of its proper divisors (2386272610724).

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

1994792434780 is a wasteful number, since it uses less digits than its factorization.

1994792434780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9789426 (or 9789424 counting only the distinct ones).

The product of its (nonzero) digits is 109734912, while the sum is 67.

The spelling of 1994792434780 in words is "one trillion, nine hundred ninety-four billion, seven hundred ninety-two million, four hundred thirty-four thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 23 46 92 115 230 443 460 886 1772 2215 4430 8860 10189 20378 40756 50945 101890 203780 9788951 19577902 39155804 48944755 97889510 195779020 225145873 450291746 900583492 1125729365 2251458730 4336505293 4502917460 8673010586 17346021172 21682526465 43365052930 86730105860 99739621739 199479243478 398958486956 498698108695 997396217390 1994792434780