23428988 has 18 divisors (see below), whose sum is σ = 45067848. Its totient is φ = 10649320.

The previous prime is 23428981. The next prime is 23428997. The reversal of 23428988 is 88982432.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23428981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23720 + ... + 24687.

Almost surely, 2^23428988 is an apocalyptic number.

It is an amenable number.

23428988 is a deficient number, since it is larger than the sum of its proper divisors (21638860).

23428988 is a wasteful number, since it uses less digits than its factorization.

23428988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48433 (or 48420 counting only the distinct ones).

The product of its digits is 221184, while the sum is 44.

The square root of 23428988 is about 4840.3499873460. The cubic root of 23428988 is about 286.1439117941.

The spelling of 23428988 in words is "twenty-three million, four hundred twenty-eight thousand, nine hundred eighty-eight".