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23020761 = 3191313083
BaseRepresentation
bin101011111010…
…0010011011001
31121022120112210
41113310103121
521343131021
62141225333
7366446631
oct127642331
947276483
1023020761
1111aa3925
127862249
134a0036a
1430b36c1
15204ae76
hex15f44d9

23020761 has 16 divisors (see below), whose sum is σ = 32567040. Its totient is φ = 14423760.

The previous prime is 23020759. The next prime is 23020787. The reversal of 23020761 is 16702032.

It is a happy number.

It is not a de Polignac number, because 23020761 - 21 = 23020759 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23020661) 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, 5926 + ... + 9008.

It is an arithmetic number, because the mean of its divisors is an integer number (2035440).

Almost surely, 223020761 is an apocalyptic number.

It is an amenable number.

23020761 is a deficient number, since it is larger than the sum of its proper divisors (9546279).

23020761 is a wasteful number, since it uses less digits than its factorization.

23020761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3236.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 23020761 is about 4797.9955189641. The cubic root of 23020761 is about 284.4722396759.

Adding to 23020761 its reverse (16702032), we get a palindrome (39722793).

The spelling of 23020761 in words is "twenty-three million, twenty thousand, seven hundred sixty-one".

Divisors: 1 3 19 57 131 393 2489 3083 7467 9249 58577 175731 403873 1211619 7673587 23020761