23102405 has 16 divisors (see below), whose sum is σ = 29528064. Its totient is φ = 17291520.

The previous prime is 23102399. The next prime is 23102407. The reversal of 23102405 is 50420132.

It is not a de Polignac number, because 23102405 - 2⁶ = 23102341 is a prime.

It is a super-2 number, since 2×23102405² = 1067442233568050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23102407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15524 + ... + 16946.

It is an arithmetic number, because the mean of its divisors is an integer number (1845504).

Almost surely, 2^23102405 is an apocalyptic number.

It is an amenable number.

23102405 is a deficient number, since it is larger than the sum of its proper divisors (6425659).

23102405 is a wasteful number, since it uses less digits than its factorization.

23102405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 23102405 is about 4806.4961250374. The cubic root of 23102405 is about 284.8081400813.

Adding to 23102405 its reverse (50420132), we get a palindrome (73522537).

The spelling of 23102405 in words is "twenty-three million, one hundred two thousand, four hundred five".