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122715027980 = 22543181788353
BaseRepresentation
bin111001001001001100…
…0101011101000001100
3102201202012222022201022
41302102120223220030
54002310021343410
6132212520533312
711602664345606
oct1622230535014
9381665868638
10122715027980
11480524858a6
121b949021238
13b7588330bc
145d21b6c176
1532d3508455
hex1c9262ba0c

122715027980 has 48 divisors (see below), whose sum is σ = 265151830944. Its totient is φ = 47679528960.

The previous prime is 122715027973. The next prime is 122715027997. The reversal of 122715027980 is 89720517221.

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, 238517 + ... + 549836.

It is an arithmetic number, because the mean of its divisors is an integer number (5523996478).

Almost surely, 2122715027980 is an apocalyptic number.

122715027980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122715027980 is an abundant number, since it is smaller than the sum of its proper divisors (142436802964).

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

122715027980 is a wasteful number, since it uses less digits than its factorization.

122715027980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788586 (or 788584 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 44.

The spelling of 122715027980 in words is "one hundred twenty-two billion, seven hundred fifteen million, twenty-seven thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 43 86 172 181 215 362 430 724 860 905 1810 3620 7783 15566 31132 38915 77830 155660 788353 1576706 3153412 3941765 7883530 15767060 33899179 67798358 135596716 142691893 169495895 285383786 338991790 570767572 677983580 713459465 1426918930 2853837860 6135751399 12271502798 24543005596 30678756995 61357513990 122715027980