23641020 has 72 divisors (see below), whose sum is σ = 77234976. Its totient is φ = 5818752.

The previous prime is 23641019. The next prime is 23641027. The reversal of 23641020 is 2014632.

It is a happy number.

23641020 is a `hidden beast` number, since 2 + 3 + 641 + 0 + 20 = 666.

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

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 23640984 and 23641002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23641027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2712 + ... + 7391.

It is an arithmetic number, because the mean of its divisors is an integer number (1072708).

Almost surely, 2^23641020 is an apocalyptic number.

23641020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23641020 is an abundant number, since it is smaller than the sum of its proper divisors (53593956).

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

23641020 is a wasteful number, since it uses less digits than its factorization.

23641020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10131 (or 10126 counting only the distinct ones).

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

The square root of 23641020 is about 4862.2032043097. The cubic root of 23641020 is about 287.0045202378.

Adding to 23641020 its reverse (2014632), we get a palindrome (25655652).

The spelling of 23641020 in words is "twenty-three million, six hundred forty-one thousand, twenty".