23020556 has 12 divisors (see below), whose sum is σ = 43384992. Its totient is φ = 10624848.

The previous prime is 23020511. The next prime is 23020573. The reversal of 23020556 is 65502032.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221300 + ... + 221403.

It is an arithmetic number, because the mean of its divisors is an integer number (3615416).

Almost surely, 2^23020556 is an apocalyptic number.

23020556 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

23020556 is a deficient number, since it is larger than the sum of its proper divisors (20364436).

23020556 is a wasteful number, since it uses less digits than its factorization.

23020556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442720 (or 442718 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 23020556 is about 4797.9741558287. The cubic root of 23020556 is about 284.4713952645.

Adding to 23020556 its reverse (65502032), we get a palindrome (88522588).

The spelling of 23020556 in words is "twenty-three million, twenty thousand, five hundred fifty-six".