23389128 has 128 divisors (see below), whose sum is σ = 76800000. Its totient is φ = 6454080.

The previous prime is 23389123. The next prime is 23389141. The reversal of 23389128 is 82198332.

It is a happy number.

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 23389092 and 23389101.

It is not an unprimeable number, because it can be changed into a prime (23389123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46623 + ... + 47121.

It is an arithmetic number, because the mean of its divisors is an integer number (600000).

Almost surely, 2^23389128 is an apocalyptic number.

23389128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23389128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38400000).

23389128 is an abundant number, since it is smaller than the sum of its proper divisors (53410872).

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

23389128 is a wasteful number, since it uses less digits than its factorization.

23389128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552 (or 542 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 23389128 is about 4836.2307637250. The cubic root of 23389128 is about 285.9815463993.

The spelling of 23389128 in words is "twenty-three million, three hundred eighty-nine thousand, one hundred twenty-eight".