23421036 has 24 divisors (see below), whose sum is σ = 57864240. Its totient is φ = 7347712.

The previous prime is 23421031. The next prime is 23421049. The reversal of 23421036 is 63012432.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23421031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57201 + ... + 57608.

It is an arithmetic number, because the mean of its divisors is an integer number (2411010).

Almost surely, 2^23421036 is an apocalyptic number.

It is an amenable number.

23421036 is an abundant number, since it is smaller than the sum of its proper divisors (34443204).

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

23421036 is a wasteful number, since it uses less digits than its factorization.

23421036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114833 (or 114831 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 23421036 is about 4839.5284894295. The cubic root of 23421036 is about 286.1115348960. Note that the first 3 decimals are identical.

Adding to 23421036 its reverse (63012432), we get a palindrome (86433468).

The spelling of 23421036 in words is "twenty-three million, four hundred twenty-one thousand, thirty-six".