23106540 has 24 divisors (see below), whose sum is σ = 64698480. Its totient is φ = 6161728.

The previous prime is 23106529. The next prime is 23106541. The reversal of 23106540 is 4560132.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23106541) 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, 192495 + ... + 192614.

It is an arithmetic number, because the mean of its divisors is an integer number (2695770).

Almost surely, 2^23106540 is an apocalyptic number.

23106540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23106540 is an abundant number, since it is smaller than the sum of its proper divisors (41591940).

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

23106540 is a wasteful number, since it uses less digits than its factorization.

23106540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385121 (or 385119 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 23106540 is about 4806.9262528148. The cubic root of 23106540 is about 284.8251312619.

Adding to 23106540 its reverse (4560132), we get a palindrome (27666672).

The spelling of 23106540 in words is "twenty-three million, one hundred six thousand, five hundred forty".