23302240 has 96 divisors (see below), whose sum is σ = 62868960. Its totient is φ = 8085504.

The previous prime is 23302229. The next prime is 23302249. The reversal of 23302240 is 4220332.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23302249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35031 + ... + 35689.

It is an arithmetic number, because the mean of its divisors is an integer number (654885).

Almost surely, 2^23302240 is an apocalyptic number.

23302240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23302240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31434480).

23302240 is an abundant number, since it is smaller than the sum of its proper divisors (39566720).

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

23302240 is a wasteful number, since it uses less digits than its factorization.

23302240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704 (or 696 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 23302240 is about 4827.2393767038. The cubic root of 23302240 is about 285.6269771325.

Adding to 23302240 its reverse (4220332), we get a palindrome (27522572).

The spelling of 23302240 in words is "twenty-three million, three hundred two thousand, two hundred forty".