23420215 has 16 divisors (see below), whose sum is σ = 34590528. Its totient is φ = 14823936.

The previous prime is 23420213. The next prime is 23420219. The reversal of 23420215 is 51202432.

It is a cyclic number.

It is not a de Polignac number, because 23420215 - 2¹ = 23420213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23420192 and 23420201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23420213) 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, 25282 + ... + 26191.

It is an arithmetic number, because the mean of its divisors is an integer number (2161908).

Almost surely, 2^23420215 is an apocalyptic number.

23420215 is a deficient number, since it is larger than the sum of its proper divisors (11170313).

23420215 is a wasteful number, since it uses less digits than its factorization.

23420215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51498.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 23420215 is about 4839.4436663732. The cubic root of 23420215 is about 286.1081917431.

Adding to 23420215 its reverse (51202432), we get a palindrome (74622647).

It can be divided in two parts, 234 and 20215, that added together give a square (20449 = 143²).

The spelling of 23420215 in words is "twenty-three million, four hundred twenty thousand, two hundred fifteen".