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20313112848 = 2437487124139
BaseRepresentation
bin10010111010110000…
…011000000100010000
31221102122201001022220
4102322300120010100
5313100124102343
613155352301040
71316243416230
oct227260300420
957378631286
1020313112848
11868424a376
123b2a9a1780
131bb9517102
14da9b0dcc0
157dd4ba183
hex4bac18110

20313112848 has 80 divisors (see below), whose sum is σ = 60095677440. Its totient is φ = 5791782528.

The previous prime is 20313112823. The next prime is 20313112849. The reversal of 20313112848 is 84821131302.

It is a super-2 number, since 2×203131128482 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20313112849) 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, 101563 + ... + 225701.

It is an arithmetic number, because the mean of its divisors is an integer number (751195968).

Almost surely, 220313112848 is an apocalyptic number.

20313112848 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20313112848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30047838720).

20313112848 is an abundant number, since it is smaller than the sum of its proper divisors (39782564592).

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

20313112848 is a wasteful number, since it uses less digits than its factorization.

20313112848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124644 (or 124638 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The spelling of 20313112848 in words is "twenty billion, three hundred thirteen million, one hundred twelve thousand, eight hundred forty-eight".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 42 48 56 84 112 168 336 487 974 1461 1948 2922 3409 3896 5844 6818 7792 10227 11688 13636 20454 23376 27272 40908 54544 81816 124139 163632 248278 372417 496556 744834 868973 993112 1489668 1737946 1986224 2606919 2979336 3475892 5213838 5958672 6951784 10427676 13903568 20855352 41710704 60455693 120911386 181367079 241822772 362734158 423189851 483645544 725468316 846379702 967291088 1269569553 1450936632 1692759404 2539139106 2901873264 3385518808 5078278212 6771037616 10156556424 20313112848