23235540 has 48 divisors (see below), whose sum is σ = 65345280. Its totient is φ = 6168960.

The previous prime is 23235521. The next prime is 23235551. The reversal of 23235540 is 4553232.

It is a self number, because there is not a number n which added to its sum of digits gives 23235540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15546 + ... + 16974.

It is an arithmetic number, because the mean of its divisors is an integer number (1361360).

Almost surely, 2^23235540 is an apocalyptic number.

23235540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23235540 is an abundant number, since it is smaller than the sum of its proper divisors (42109740).

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

23235540 is a wasteful number, since it uses less digits than its factorization.

23235540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712 (or 1710 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 23235540 is about 4820.3257151359. The cubic root of 23235540 is about 285.3541918302.

Adding to 23235540 its reverse (4553232), we get a palindrome (27788772).

The spelling of 23235540 in words is "twenty-three million, two hundred thirty-five thousand, five hundred forty".