23554140 has 24 divisors (see below), whose sum is σ = 65951760. Its totient is φ = 6281088.

The previous prime is 23554133. The next prime is 23554169. The reversal of 23554140 is 4145532.

It is a super-3 number, since 3×23554140³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 23554140.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196225 + ... + 196344.

It is an arithmetic number, because the mean of its divisors is an integer number (2747990).

Almost surely, 2^23554140 is an apocalyptic number.

23554140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23554140 is an abundant number, since it is smaller than the sum of its proper divisors (42397620).

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

23554140 is a wasteful number, since it uses less digits than its factorization.

23554140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392581 (or 392579 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 23554140 is about 4853.2607595306. The cubic root of 23554140 is about 286.6525111693.

Adding to 23554140 its reverse (4145532), we get a palindrome (27699672).

The spelling of 23554140 in words is "twenty-three million, five hundred fifty-four thousand, one hundred forty".