23445649 has 4 divisors (see below), whose sum is σ = 23477220. Its totient is φ = 23414080.

The previous prime is 23445647. The next prime is 23445683. The reversal of 23445649 is 94654432.

It is a happy number.

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 7700625 + 15745024 = 2775^2 + 3968^2 .

It is a cyclic number.

It is not a de Polignac number, because 23445649 - 2¹ = 23445647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23445647) 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, 14644 + ... + 16165.

It is an arithmetic number, because the mean of its divisors is an integer number (5869305).

Almost surely, 2^23445649 is an apocalyptic number.

It is an amenable number.

23445649 is a deficient number, since it is larger than the sum of its proper divisors (31571).

23445649 is an equidigital number, since it uses as much as digits as its factorization.

23445649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31570.

The product of its digits is 103680, while the sum is 37.

The square root of 23445649 is about 4842.0707347167. The cubic root of 23445649 is about 286.2117239999.

The spelling of 23445649 in words is "twenty-three million, four hundred forty-five thousand, six hundred forty-nine".