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23240743 = 191223197
BaseRepresentation
bin101100010101…
…0000000100111
31121201202022021
41120222000213
521422200433
62150044011
7401354161
oct130520047
947652267
1023240743
1112134129
127949607
134a79526
14312d931
15209122d
hex162a027

23240743 has 4 divisors (see below), whose sum is σ = 24463960. Its totient is φ = 22017528.

The previous prime is 23240729. The next prime is 23240753. The reversal of 23240743 is 34704232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23240743 - 213 = 23232551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23240753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611580 + ... + 611617.

It is an arithmetic number, because the mean of its divisors is an integer number (6115990).

Almost surely, 223240743 is an apocalyptic number.

23240743 is a deficient number, since it is larger than the sum of its proper divisors (1223217).

23240743 is a wasteful number, since it uses less digits than its factorization.

23240743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223216.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 23240743 is about 4820.8653787468. The cubic root of 23240743 is about 285.3754894782.

Adding to 23240743 its reverse (34704232), we get a palindrome (57944975).

The spelling of 23240743 in words is "twenty-three million, two hundred forty thousand, seven hundred forty-three".

Divisors: 1 19 1223197 23240743