23147928 has 48 divisors (see below), whose sum is σ = 65995800. Its totient is φ = 7309440.

The previous prime is 23147899. The next prime is 23147933. The reversal of 23147928 is 82974132.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 23147892 and 23147901.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 7093 + ... + 9828.

Almost surely, 2^23147928 is an apocalyptic number.

It is an amenable number.

23147928 is an abundant number, since it is smaller than the sum of its proper divisors (42847872).

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

23147928 is a wasteful number, since it uses less digits than its factorization.

23147928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16952 (or 16945 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 23147928 is about 4811.2293647258. The cubic root of 23147928 is about 284.9950876346.

The spelling of 23147928 in words is "twenty-three million, one hundred forty-seven thousand, nine hundred twenty-eight".