23420445 has 32 divisors (see below), whose sum is σ = 40529280. Its totient is φ = 11508480.

The previous prime is 23420443. The next prime is 23420447. The reversal of 23420445 is 54402432.

It is an interprime number because it is at equal distance from previous prime (23420443) and next prime (23420447).

It is not a de Polignac number, because 23420445 - 2¹ = 23420443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23420443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9435 + ... + 11655.

It is an arithmetic number, because the mean of its divisors is an integer number (1266540).

Almost surely, 2^23420445 is an apocalyptic number.

It is an amenable number.

23420445 is a deficient number, since it is larger than the sum of its proper divisors (17108835).

23420445 is a wasteful number, since it uses less digits than its factorization.

23420445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 23420445 is about 4839.4674293769. The cubic root of 23420445 is about 286.1091283224.

Adding to 23420445 its reverse (54402432), we get a palindrome (77822877).

The spelling of 23420445 in words is "twenty-three million, four hundred twenty thousand, four hundred forty-five".