23405245 has 8 divisors (see below), whose sum is σ = 29564640. Its totient is φ = 17738640.

The previous prime is 23405203. The next prime is 23405257. The reversal of 23405245 is 54250432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23405245 - 2¹⁵ = 23372477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123091 + ... + 123280.

It is an arithmetic number, because the mean of its divisors is an integer number (3695580).

Almost surely, 2^23405245 is an apocalyptic number.

It is an amenable number.

23405245 is a deficient number, since it is larger than the sum of its proper divisors (6159395).

23405245 is a wasteful number, since it uses less digits than its factorization.

23405245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246395.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 23405245 is about 4837.8967537557. The cubic root of 23405245 is about 286.0472194518.

Adding to 23405245 its reverse (54250432), we get a palindrome (77655677).

The spelling of 23405245 in words is "twenty-three million, four hundred five thousand, two hundred forty-five".