23642136 has 96 divisors (see below), whose sum is σ = 74474400. Its totient is φ = 6635520.

The previous prime is 23642123. The next prime is 23642153. The reversal of 23642136 is 63124632.

23642136 is a `hidden beast` number, since 2 + 3 + 642 + 13 + 6 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30360 + ... + 31128.

It is an arithmetic number, because the mean of its divisors is an integer number (775775).

Almost surely, 2^23642136 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 23642136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37237200).

23642136 is an abundant number, since it is smaller than the sum of its proper divisors (50832264).

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

23642136 is a wasteful number, since it uses less digits than its factorization.

23642136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849 (or 842 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 23642136 is about 4862.3179657443. The cubic root of 23642136 is about 287.0090362867.

Adding to 23642136 its reverse (63124632), we get a palindrome (86766768).

The spelling of 23642136 in words is "twenty-three million, six hundred forty-two thousand, one hundred thirty-six".