23241640 has 16 divisors (see below), whose sum is σ = 52293780. Its totient is φ = 9296640.

The previous prime is 23241553. The next prime is 23241643. The reversal of 23241640 is 4614232.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20738916 + 2502724 = 4554^2 + 1582^2 .

It is not an unprimeable number, because it can be changed into a prime (23241643) 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 3 ways as a sum of consecutive naturals, for example, 290481 + ... + 290560.

Almost surely, 2^23241640 is an apocalyptic number.

23241640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23241640 is an abundant number, since it is smaller than the sum of its proper divisors (29052140).

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

23241640 is a wasteful number, since it uses less digits than its factorization.

23241640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581052 (or 581048 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 23241640 is about 4820.9584109386. The cubic root of 23241640 is about 285.3791608829.

Adding to 23241640 its reverse (4614232), we get a palindrome (27855872).

The spelling of 23241640 in words is "twenty-three million, two hundred forty-one thousand, six hundred forty".