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87850026380 = 2254392501319
BaseRepresentation
bin101000111010001000…
…1010000010110001100
322101202102022201202202
41101310101100112030
52414404101321010
6104205134541032
76230001621614
oct1216421202614
9271672281682
1087850026380
1134291060096
1215038967778
13839058803c
144375563a44
1524427426a5
hex147445058c

87850026380 has 12 divisors (see below), whose sum is σ = 184485055440. Its totient is φ = 35140010544.

The previous prime is 87850026379. The next prime is 87850026449. The reversal of 87850026380 is 8362005878.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2196250640 + ... + 2196250679.

It is an arithmetic number, because the mean of its divisors is an integer number (15373754620).

Almost surely, 287850026380 is an apocalyptic number.

It is an amenable number.

87850026380 is an abundant number, since it is smaller than the sum of its proper divisors (96635029060).

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

87850026380 is a wasteful number, since it uses less digits than its factorization.

87850026380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4392501328 (or 4392501326 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 87850026380 in words is "eighty-seven billion, eight hundred fifty million, twenty-six thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 4392501319 8785002638 17570005276 21962506595 43925013190 87850026380