23027440 has 40 divisors (see below), whose sum is σ = 54559008. Its totient is φ = 9035520.

The previous prime is 23027399. The next prime is 23027441. The reversal of 23027440 is 4472032.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23027441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1525 + ... + 6955.

Almost surely, 2^23027440 is an apocalyptic number.

23027440 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 23027440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27279504).

23027440 is an abundant number, since it is smaller than the sum of its proper divisors (31531568).

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

23027440 is a wasteful number, since it uses less digits than its factorization.

23027440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5497 (or 5491 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 23027440 is about 4798.6914883122. The cubic root of 23027440 is about 284.4997482709.

Adding to 23027440 its reverse (4472032), we get a palindrome (27499472).

The spelling of 23027440 in words is "twenty-three million, twenty-seven thousand, four hundred forty".