23210240 has 36 divisors (see below), whose sum is σ = 55598844. Its totient is φ = 9283584.

The previous prime is 23210189. The next prime is 23210249. The reversal of 23210240 is 4201232.

It can be written as a sum of positive squares in 2 ways, for example, as 8952064 + 14258176 = 2992^2 + 3776^2 .

It is not an unprimeable number, because it can be changed into a prime (23210249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7787 + ... + 10346.

Almost surely, 2^23210240 is an apocalyptic number.

23210240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23210240 is an abundant number, since it is smaller than the sum of its proper divisors (32388604).

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

23210240 is an equidigital number, since it uses as much as digits as its factorization.

23210240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18154 (or 18140 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 23210240 is about 4817.7006963903. The cubic root of 23210240 is about 285.2505849857.

Adding to 23210240 its reverse (4201232), we get a palindrome (27411472).

The spelling of 23210240 in words is "twenty-three million, two hundred ten thousand, two hundred forty".