23612240 has 20 divisors (see below), whose sum is σ = 54898644. Its totient is φ = 9444864.

The previous prime is 23612227. The next prime is 23612243. The reversal of 23612240 is 4221632.

It can be written as a sum of positive squares in 2 ways, for example, as 13601344 + 10010896 = 3688^2 + 3164^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23612243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147497 + ... + 147656.

Almost surely, 2^23612240 is an apocalyptic number.

23612240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23612240 is an abundant number, since it is smaller than the sum of its proper divisors (31286404).

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

23612240 is a wasteful number, since it uses less digits than its factorization.

23612240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295166 (or 295160 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 23612240 is about 4859.2427393576. The cubic root of 23612240 is about 286.8880088493. Note that the first 3 decimals are identical.

Adding to 23612240 its reverse (4221632), we get a palindrome (27833872).

The spelling of 23612240 in words is "twenty-three million, six hundred twelve thousand, two hundred forty".