23703240 has 64 divisors (see below), whose sum is σ = 77578560. Its totient is φ = 5745920.

The previous prime is 23703227. The next prime is 23703259. The reversal of 23703240 is 4230732.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7659 + ... + 10298.

It is an arithmetic number, because the mean of its divisors is an integer number (1212165).

Almost surely, 2^23703240 is an apocalyptic number.

23703240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23703240 is an abundant number, since it is smaller than the sum of its proper divisors (53875320).

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

23703240 is a wasteful number, since it uses less digits than its factorization.

23703240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17982 (or 17978 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 23703240 is about 4868.5973339351. The cubic root of 23703240 is about 287.2560854974.

Adding to 23703240 its reverse (4230732), we get a palindrome (27933972).

The spelling of 23703240 in words is "twenty-three million, seven hundred three thousand, two hundred forty".