23353540 has 48 divisors (see below), whose sum is σ = 57867264. Its totient is φ = 7747200.

The previous prime is 23353513. The next prime is 23353541. The reversal of 23353540 is 4535332.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23353541) 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, 1650 + ... + 7030.

It is an arithmetic number, because the mean of its divisors is an integer number (1205568).

Almost surely, 2^23353540 is an apocalyptic number.

23353540 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 23353540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28933632).

23353540 is an abundant number, since it is smaller than the sum of its proper divisors (34513724).

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

23353540 is a wasteful number, since it uses less digits than its factorization.

23353540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5428 (or 5426 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 25.

The square root of 23353540 is about 4832.5500514739. The cubic root of 23353540 is about 285.8364265877.

Adding to 23353540 its reverse (4535332), we get a palindrome (27888872).

The spelling of 23353540 in words is "twenty-three million, three hundred fifty-three thousand, five hundred forty".