23861136 has 40 divisors (see below), whose sum is σ = 66384640. Its totient is φ = 7341696.

The previous prime is 23861129. The next prime is 23861137. The reversal of 23861136 is 63116832.

It is a super-2 number, since 2×23861136² = 1138707622420992, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (23861137) 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, 18496 + ... + 19743.

It is an arithmetic number, because the mean of its divisors is an integer number (1659616).

Almost surely, 2^23861136 is an apocalyptic number.

23861136 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

23861136 is an abundant number, since it is smaller than the sum of its proper divisors (42523504).

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

23861136 is a wasteful number, since it uses less digits than its factorization.

23861136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38263 (or 38257 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 23861136 is about 4884.7861775107. The cubic root of 23861136 is about 287.8925139018.

Adding to 23861136 its reverse (63116832), we get a palindrome (86977968).

The spelling of 23861136 in words is "twenty-three million, eight hundred sixty-one thousand, one hundred thirty-six".