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8981863038 = 23455443599
BaseRepresentation
bin10000101110101110…
…00101101001111110
3212011221221220210000
420113113011221332
5121343324104123
64043132255130
7435402401421
oct102727055176
925157856700
108981863038
11389a033705
1218a80114a6
13b01a9cb75
14612c539b8
153787e7b43
hex2175c5a7e

8981863038 has 20 divisors (see below), whose sum is σ = 20126026800. Its totient is φ = 2993954292.

The previous prime is 8981863031. The next prime is 8981863039. The reversal of 8981863038 is 8303681898.

It is a happy number.

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 (8981863031) 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 9 ways as a sum of consecutive naturals, for example, 27721638 + ... + 27721961.

It is an arithmetic number, because the mean of its divisors is an integer number (1006301340).

Almost surely, 28981863038 is an apocalyptic number.

8981863038 is an abundant number, since it is smaller than the sum of its proper divisors (11144163762).

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

8981863038 is a wasteful number, since it uses less digits than its factorization.

8981863038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55443613 (or 55443604 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The square root of 8981863038 is about 94772.6914147741. The cubic root of 8981863038 is about 2078.6856092751.

The spelling of 8981863038 in words is "eight billion, nine hundred eighty-one million, eight hundred sixty-three thousand, thirty-eight".

Divisors: 1 2 3 6 9 18 27 54 81 162 55443599 110887198 166330797 332661594 498992391 997984782 1496977173 2993954346 4490931519 8981863038