23622240 has 96 divisors (see below), whose sum is σ = 77021280. Its totient is φ = 6078464.

The previous prime is 23622233. The next prime is 23622241. The reversal of 23622240 is 4222632.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23622241) 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, 13072 + ... + 14768.

It is an arithmetic number, because the mean of its divisors is an integer number (802305).

Almost surely, 2^23622240 is an apocalyptic number.

23622240 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 23622240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38510640).

23622240 is an abundant number, since it is smaller than the sum of its proper divisors (53399040).

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

23622240 is a wasteful number, since it uses less digits than its factorization.

23622240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744 (or 1736 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 23622240 is about 4860.2715973493. The cubic root of 23622240 is about 286.9285030335.

Adding to 23622240 its reverse (4222632), we get a palindrome (27844872).

The spelling of 23622240 in words is "twenty-three million, six hundred twenty-two thousand, two hundred forty".