23622012 has 72 divisors (see below), whose sum is σ = 63737856. Its totient is φ = 7359264.

The previous prime is 23621999. The next prime is 23622017. The reversal of 23622012 is 21022632.

It is a super-4 number, since 4×23622012⁴ (a number of 31 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23622017) 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 23 ways as a sum of consecutive naturals, for example, 38613 + ... + 39219.

It is an arithmetic number, because the mean of its divisors is an integer number (885248).

Almost surely, 2^23622012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23622012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31868928).

23622012 is an abundant number, since it is smaller than the sum of its proper divisors (40115844).

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

23622012 is a wasteful number, since it uses less digits than its factorization.

23622012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 23622012 is about 4860.2481418133. The cubic root of 23622012 is about 286.9275798934.

Adding to 23622012 its reverse (21022632), we get a palindrome (44644644).

The spelling of 23622012 in words is "twenty-three million, six hundred twenty-two thousand, twelve".