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20486100960 = 25335131973263
BaseRepresentation
bin10011000101000100…
…010001011111100000
31221212201012202102000
4103011010101133200
5313423420212320
613224452124000
71323443661603
oct230504213740
957781182360
1020486100960
118762962956
123b78906600
131c16304540
14dc4aa033a
157ed78ac90
hex4c51117e0

20486100960 has 768 divisors, whose sum is σ = 82707609600. Its totient is φ = 4693966848.

The previous prime is 20486100931. The next prime is 20486100961. The reversal of 20486100960 is 6900168402.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20486100961) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 77893789 + ... + 77894051.

It is an arithmetic number, because the mean of its divisors is an integer number (107692200).

Almost surely, 220486100960 is an apocalyptic number.

20486100960 is a gapful number since it is divisible by the number (20) 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 20486100960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41353804800).

20486100960 is an abundant number, since it is smaller than the sum of its proper divisors (62221508640).

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

20486100960 is a wasteful number, since it uses less digits than its factorization.

20486100960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 20486100960 in words is "twenty billion, four hundred eighty-six million, one hundred thousand, nine hundred sixty".