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1228237038380 = 2251117332271073
BaseRepresentation
bin10001110111111000101…
…000011110001100101100
311100102021221200021122202
4101313320220132030230
5130110412140212010
62340124434201032
7154510600366052
oct21677050361454
94312257607582
101228237038380
1143398a873a50
1217a05a123178
138ba8c65a541
144363877c1d2
1521e38b756a5
hex11df8a1e32c

1228237038380 has 48 divisors (see below), whose sum is σ = 2830044105504. Its totient is φ = 444049950720.

The previous prime is 1228237038359. The next prime is 1228237038383. The reversal of 1228237038380 is 838307328221.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1228237038383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16097477 + ... + 16173596.

It is an arithmetic number, because the mean of its divisors is an integer number (58959252198).

Almost surely, 21228237038380 is an apocalyptic number.

1228237038380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1228237038380 is an abundant number, since it is smaller than the sum of its proper divisors (1601807067124).

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

1228237038380 is a wasteful number, since it uses less digits than its factorization.

1228237038380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32271266 (or 32271264 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 1228237038380 in words is "one trillion, two hundred twenty-eight billion, two hundred thirty-seven million, thirty-eight thousand, three hundred eighty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 173 220 346 692 865 1730 1903 3460 3806 7612 9515 19030 38060 32271073 64542146 129084292 161355365 322710730 354981803 645421460 709963606 1419927212 1774909015 3549818030 5582895629 7099636060 11165791258 22331582516 27914478145 55828956290 61411851919 111657912580 122823703838 245647407676 307059259595 614118519190 1228237038380