23447029 has 4 divisors (see below), whose sum is σ = 24826284. Its totient is φ = 22067776.

The previous prime is 23447027. The next prime is 23447033. The reversal of 23447029 is 92074432.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21762225 + 1684804 = 4665^2 + 1298^2 .

It is a cyclic number.

It is not a de Polignac number, because 23447029 - 2¹ = 23447027 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 (23447027) 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, 689602 + ... + 689635.

It is an arithmetic number, because the mean of its divisors is an integer number (6206571).

Almost surely, 2^23447029 is an apocalyptic number.

It is an amenable number.

23447029 is a deficient number, since it is larger than the sum of its proper divisors (1379255).

23447029 is a wasteful number, since it uses less digits than its factorization.

23447029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379254.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 23447029 is about 4842.2132336360. The cubic root of 23447029 is about 286.2173393194.

The spelling of 23447029 in words is "twenty-three million, four hundred forty-seven thousand, twenty-nine".