23728261 has 2 divisors, whose sum is σ = 23728262. Its totient is φ = 23728260.

The previous prime is 23728247. The next prime is 23728267. The reversal of 23728261 is 16282732.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21068100 + 2660161 = 4590^2 + 1631^2 .

It is a cyclic number.

It is not a de Polignac number, because 23728261 - 2⁹ = 23727749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23728267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11864130 + 11864131.

It is an arithmetic number, because the mean of its divisors is an integer number (11864131).

Almost surely, 2^23728261 is an apocalyptic number.

It is an amenable number.

23728261 is a deficient number, since it is larger than the sum of its proper divisors (1).

23728261 is an equidigital number, since it uses as much as digits as its factorization.

23728261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 31.

The square root of 23728261 is about 4871.1662874511. The cubic root of 23728261 is about 287.3571252286.

The spelling of 23728261 in words is "twenty-three million, seven hundred twenty-eight thousand, two hundred sixty-one".