23640450 has 48 divisors (see below), whose sum is σ = 59031936. Its totient is φ = 6260800.

The previous prime is 23640439. The next prime is 23640451. The reversal of 23640450 is 5404632.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23640450.

It is not an unprimeable number, because it can be changed into a prime (23640451) 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 23 ways as a sum of consecutive naturals, for example, 25495 + ... + 26405.

It is an arithmetic number, because the mean of its divisors is an integer number (1229832).

Almost surely, 2^23640450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23640450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29515968).

23640450 is an abundant number, since it is smaller than the sum of its proper divisors (35391486).

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

23640450 is a wasteful number, since it uses less digits than its factorization.

23640450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099 (or 1094 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 23640450 is about 4862.1445885535. The cubic root of 23640450 is about 287.0022135989.

It can be divided in two parts, 23640 and 450, that added together give a triangular number (24090 = T₂₁₉).

The spelling of 23640450 in words is "twenty-three million, six hundred forty thousand, four hundred fifty".