23140556 has 12 divisors (see below), whose sum is σ = 42627480. Its totient is φ = 10961280.

The previous prime is 23140531. The next prime is 23140571. The reversal of 23140556 is 65504132.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152165 + ... + 152316.

It is an arithmetic number, because the mean of its divisors is an integer number (3552290).

Almost surely, 2^23140556 is an apocalyptic number.

It is an amenable number.

23140556 is a deficient number, since it is larger than the sum of its proper divisors (19486924).

23140556 is a wasteful number, since it uses less digits than its factorization.

23140556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304504 (or 304502 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 23140556 is about 4810.4631793623. The cubic root of 23140556 is about 284.9648299681.

Adding to 23140556 its reverse (65504132), we get a palindrome (88644688).

The spelling of 23140556 in words is "twenty-three million, one hundred forty thousand, five hundred fifty-six".