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23901970866 = 239774077443
BaseRepresentation
bin10110010000101010…
…110010000110110010
32021200202202221000020
4112100222302012302
5342422401031431
614551434104310
71504212254154
oct262052620662
967622687006
1023901970866
11a156048534
12477087b096
13233bbc5937
14122a5dcad4
1594d5ca696
hex590ab21b2

23901970866 has 16 divisors (see below), whose sum is σ = 47852882784. Its totient is φ = 7959166784.

The previous prime is 23901970849. The next prime is 23901970871. The reversal of 23901970866 is 66807910932.

It is a super-2 number, since 2×239019708662 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2032860 + ... + 2044583.

It is an arithmetic number, because the mean of its divisors is an integer number (2990805174).

Almost surely, 223901970866 is an apocalyptic number.

23901970866 is an abundant number, since it is smaller than the sum of its proper divisors (23950911918).

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

23901970866 is a wasteful number, since it uses less digits than its factorization.

23901970866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4078425.

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 23901970866 in words is "twenty-three billion, nine hundred one million, nine hundred seventy thousand, eight hundred sixty-six".

Divisors: 1 2 3 6 977 1954 2931 5862 4077443 8154886 12232329 24464658 3983661811 7967323622 11950985433 23901970866