Search a number
-
+
23007761 = 73286823
BaseRepresentation
bin101011111000…
…1001000010001
31121021220201022
41113301020101
521342222021
62141045225
7366364010
oct127611021
947256638
1023007761
1111a95087
127856815
1349c747a
1430aca77
1520471ab
hex15f1211

23007761 has 4 divisors (see below), whose sum is σ = 26294592. Its totient is φ = 19720932.

The previous prime is 23007739. The next prime is 23007767. The reversal of 23007761 is 16770032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 23007761 - 214 = 22991377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23007761.

It is not an unprimeable number, because it can be changed into a prime (23007767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1643405 + ... + 1643418.

It is an arithmetic number, because the mean of its divisors is an integer number (6573648).

Almost surely, 223007761 is an apocalyptic number.

It is an amenable number.

23007761 is a deficient number, since it is larger than the sum of its proper divisors (3286831).

23007761 is an equidigital number, since it uses as much as digits as its factorization.

23007761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3286830.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 23007761 is about 4796.6405952500. The cubic root of 23007761 is about 284.4186817092.

Adding to 23007761 its reverse (16770032), we get a palindrome (39777793).

The spelling of 23007761 in words is "twenty-three million, seven thousand, seven hundred sixty-one".

Divisors: 1 7 3286823 23007761