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2868431166720 = 28335713190511
BaseRepresentation
bin101001101111011011110…
…100100001110100000000
3101011012220220022001011000
4221233123310201310000
5333444021334313340
610033423350452000
7414144253424550
oct51573364416400
911135826261130
102868431166720
11a06549682a19
123a3b07964000
1317a651915672
149cb9332b160
154e933cdad30
hex29bdbd21d00

2868431166720 has 576 divisors, whose sum is σ = 11722013614080. Its totient is φ = 650629324800.

The previous prime is 2868431166617. The next prime is 2868431166721. The reversal of 2868431166720 is 276611348682.

It is a happy number.

2868431166720 is a `hidden beast` number, since 2 + 86 + 8 + 431 + 1 + 66 + 72 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2868431166721) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31646265 + ... + 31736775.

It is an arithmetic number, because the mean of its divisors is an integer number (20350718080).

Almost surely, 22868431166720 is an apocalyptic number.

2868431166720 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 2868431166720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5861006807040).

2868431166720 is an abundant number, since it is smaller than the sum of its proper divisors (8853582447360).

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

2868431166720 is a wasteful number, since it uses less digits than its factorization.

2868431166720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90679 (or 90659 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 2868431166720 in words is "two trillion, eight hundred sixty-eight billion, four hundred thirty-one million, one hundred sixty-six thousand, seven hundred twenty".