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20300211912 = 23337191119689
BaseRepresentation
bin10010111001111111…
…001010011011001000
31221101202102121120110
4102321333022123020
5313033323240122
613154211554320
71316025645201
oct227177123310
957352377513
1020300211912
118677a38742
123b265bb9a0
131bb694b016
14da81125a8
157dc2bc90c
hex4b9fca6c8

20300211912 has 64 divisors (see below), whose sum is σ = 52395494400. Its totient is φ = 6549327360.

The previous prime is 20300211881. The next prime is 20300211913. The reversal of 20300211912 is 21911200302.

It is not an unprimeable number, because it can be changed into a prime (20300211913) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 109764 + ... + 229452.

It is an arithmetic number, because the mean of its divisors is an integer number (818679600).

Almost surely, 220300211912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20300211912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26197747200).

20300211912 is an abundant number, since it is smaller than the sum of its proper divisors (32095282488).

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

20300211912 is a wasteful number, since it uses less digits than its factorization.

20300211912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119926 (or 119922 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The spelling of 20300211912 in words is "twenty billion, three hundred million, two hundred eleven thousand, nine hundred twelve".

Divisors: 1 2 3 4 6 8 12 24 37 74 111 148 191 222 296 382 444 573 764 888 1146 1528 2292 4584 7067 14134 21201 28268 42402 56536 84804 119689 169608 239378 359067 478756 718134 957512 1436268 2872536 4428493 8856986 13285479 17713972 22860599 26570958 35427944 45721198 53141916 68581797 91442396 106283832 137163594 182884792 274327188 548654376 845842163 1691684326 2537526489 3383368652 5075052978 6766737304 10150105956 20300211912