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23930023 = 131840771
BaseRepresentation
bin101101101001…
…0010010100111
31200000202211011
41123102102213
522111230043
62212523051
7410254555
oct133222247
950022734
1023930023
1112564a87
128020487
134c5b1a0
14326cbd5
15217a59d
hex16d24a7

23930023 has 4 divisors (see below), whose sum is σ = 25770808. Its totient is φ = 22089240.

The previous prime is 23929991. The next prime is 23930069. The reversal of 23930023 is 32003932.

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 23930023 - 25 = 23929991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23929976 and 23930003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23930723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 920373 + ... + 920398.

It is an arithmetic number, because the mean of its divisors is an integer number (6442702).

Almost surely, 223930023 is an apocalyptic number.

23930023 is a deficient number, since it is larger than the sum of its proper divisors (1840785).

23930023 is a wasteful number, since it uses less digits than its factorization.

23930023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840784.

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 23930023 is about 4891.8322743119. The cubic root of 23930023 is about 288.1692958782.

Adding to 23930023 its reverse (32003932), we get a palindrome (55933955).

The spelling of 23930023 in words is "twenty-three million, nine hundred thirty thousand, twenty-three".

Divisors: 1 13 1840771 23930023