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23087980221 = 3232911538221
BaseRepresentation
bin10101100000001001…
…101001111010111101
32012121001002220202120
4111200021221322331
5334241010331341
614334555313153
71445066410455
oct254011517275
965531086676
1023087980221
119878621299
12458414b7b9
13223c384977
141190470d65
15901ddd066
hex560269ebd

23087980221 has 16 divisors (see below), whose sum is σ = 33230079360. Its totient is φ = 14215087040.

The previous prime is 23087980213. The next prime is 23087980247. The reversal of 23087980221 is 12208978032.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23087980221 - 23 = 23087980213 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23087980261) 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, 5767110 + ... + 5771111.

It is an arithmetic number, because the mean of its divisors is an integer number (2076879960).

Almost surely, 223087980221 is an apocalyptic number.

It is an amenable number.

23087980221 is a deficient number, since it is larger than the sum of its proper divisors (10142099139).

23087980221 is a wasteful number, since it uses less digits than its factorization.

23087980221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11538276.

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 23087980221 in words is "twenty-three billion, eighty-seven million, nine hundred eighty thousand, two hundred twenty-one".

Divisors: 1 3 23 29 69 87 667 2001 11538221 34614663 265379083 334608409 796137249 1003825227 7695993407 23087980221