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23078785880 = 2351733939391
BaseRepresentation
bin10101011111100110…
…100101001101011000
32012120101210210111102
4111133212211031120
5334231132122010
614334030250532
71444625305013
oct253746451530
965511723442
1023078785880
119873411467
124581056a48
13223a4b5a27
14118d15a37a
159011c3ba5
hex55f9a5358

23078785880 has 32 divisors (see below), whose sum is σ = 54981815040. Its totient is φ = 8688483840.

The previous prime is 23078785871. The next prime is 23078785901. The reversal of 23078785880 is 8858787032.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16969016 + ... + 16970375.

It is an arithmetic number, because the mean of its divisors is an integer number (1718181720).

Almost surely, 223078785880 is an apocalyptic number.

23078785880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23078785880 is an abundant number, since it is smaller than the sum of its proper divisors (31903029160).

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

23078785880 is a wasteful number, since it uses less digits than its factorization.

23078785880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33939419 (or 33939415 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 56.

The spelling of 23078785880 in words is "twenty-three billion, seventy-eight million, seven hundred eighty-five thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 17 20 34 40 68 85 136 170 340 680 33939391 67878782 135757564 169696955 271515128 339393910 576969647 678787820 1153939294 1357575640 2307878588 2884848235 4615757176 5769696470 11539392940 23078785880