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23903493860 = 2251195174693
BaseRepresentation
bin10110010000110000…
…100101111011100100
32021200212122022011102
4112100300211323210
5342423243300420
614551530455232
71504231226321
oct262060457344
967625568142
1023903493860
11a156998804
124771294518
13233c309c0c
14122a8b7b48
1594d7cba75
hex590c25ee4

23903493860 has 12 divisors (see below), whose sum is σ = 50197337148. Its totient is φ = 9561397536.

The previous prime is 23903493853. The next prime is 23903493863. The reversal of 23903493860 is 6839430932.

It can be written as a sum of positive squares in 2 ways, for example, as 18312043684 + 5591450176 = 135322^2 + 74776^2 .

It is not an unprimeable number, because it can be changed into a prime (23903493863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 597587327 + ... + 597587366.

It is an arithmetic number, because the mean of its divisors is an integer number (4183111429).

Almost surely, 223903493860 is an apocalyptic number.

23903493860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23903493860 is an abundant number, since it is smaller than the sum of its proper divisors (26293843288).

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

23903493860 is a wasteful number, since it uses less digits than its factorization.

23903493860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195174702 (or 1195174700 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 47.

The spelling of 23903493860 in words is "twenty-three billion, nine hundred three million, four hundred ninety-three thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 1195174693 2390349386 4780698772 5975873465 11951746930 23903493860