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23892798985 = 5111505328859
BaseRepresentation
bin10110010000000111…
…110010111000001001
32021200010111221112221
4112100013302320021
5342413024031420
614550505334041
71504041304036
oct262007627011
967603457487
1023892798985
11a150953570
124769797321
13233a033ca3
1412292d238d
1594c8b7caa
hex5901f2e09

23892798985 has 16 divisors (see below), whose sum is σ = 31281007680. Its totient is φ = 17374824640.

The previous prime is 23892798911. The next prime is 23892798989. The reversal of 23892798985 is 58989729832.

It is not a de Polignac number, because 23892798985 - 233 = 15302864393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23892798989) 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, 813486 + ... + 842344.

It is an arithmetic number, because the mean of its divisors is an integer number (1955062980).

Almost surely, 223892798985 is an apocalyptic number.

It is an amenable number.

23892798985 is a deficient number, since it is larger than the sum of its proper divisors (7388208695).

23892798985 is a wasteful number, since it uses less digits than its factorization.

23892798985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43928.

The product of its digits is 156764160, while the sum is 70.

The spelling of 23892798985 in words is "twenty-three billion, eight hundred ninety-two million, seven hundred ninety-eight thousand, nine hundred eighty-five".

Divisors: 1 5 11 55 15053 28859 75265 144295 165583 317449 827915 1587245 434414527 2172072635 4778559797 23892798985