23870729 has 2 divisors, whose sum is σ = 23870730. Its totient is φ = 23870728.

The previous prime is 23870701. The next prime is 23870753. The reversal of 23870729 is 92707832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20912329 + 2958400 = 4573^2 + 1720^2 .

It is a cyclic number.

It is not a de Polignac number, because 23870729 - 2²⁰ = 22822153 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 23870692 and 23870701.

It is not a weakly prime, because it can be changed into another prime (23870789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11935364 + 11935365.

It is an arithmetic number, because the mean of its divisors is an integer number (11935365).

Almost surely, 2^23870729 is an apocalyptic number.

It is an amenable number.

23870729 is a deficient number, since it is larger than the sum of its proper divisors (1).

23870729 is an equidigital number, since it uses as much as digits as its factorization.

23870729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 23870729 is about 4885.7680051349. The cubic root of 23870729 is about 287.9310896408.

The spelling of 23870729 in words is "twenty-three million, eight hundred seventy thousand, seven hundred twenty-nine".