23047405 has 4 divisors (see below), whose sum is σ = 27656892. Its totient is φ = 18437920.

The previous prime is 23047363. The next prime is 23047417. The reversal of 23047405 is 50474032.

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 16990884 + 6056521 = 4122^2 + 2461^2 .

It is not a de Polignac number, because 23047405 - 2¹³ = 23039213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23047405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2304736 + ... + 2304745.

It is an arithmetic number, because the mean of its divisors is an integer number (6914223).

Almost surely, 2^23047405 is an apocalyptic number.

It is an amenable number.

23047405 is a deficient number, since it is larger than the sum of its proper divisors (4609487).

23047405 is an equidigital number, since it uses as much as digits as its factorization.

23047405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4609486.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 23047405 is about 4800.7712921988. The cubic root of 23047405 is about 284.5819458102.

The spelling of 23047405 in words is "twenty-three million, forty-seven thousand, four hundred five".