23515422 has 32 divisors (see below), whose sum is σ = 55486464. Its totient is φ = 6501600.

The previous prime is 23515399. The next prime is 23515423. The reversal of 23515422 is 22451532.

It is a junction number, because it is equal to n+sod(n) for n = 23515392 and 23515401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23515423) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7729 + ... + 10332.

It is an arithmetic number, because the mean of its divisors is an integer number (1733952).

Almost surely, 2^23515422 is an apocalyptic number.

23515422 is an abundant number, since it is smaller than the sum of its proper divisors (31971042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23515422 is a wasteful number, since it uses less digits than its factorization.

23515422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18104.

The product of its digits is 2400, while the sum is 24.

The square root of 23515422 is about 4849.2702543785. The cubic root of 23515422 is about 286.4953597621.

Adding to 23515422 its reverse (22451532), we get a palindrome (45966954).

The spelling of 23515422 in words is "twenty-three million, five hundred fifteen thousand, four hundred twenty-two".