23398128 has 120 divisors (see below), whose sum is σ = 73120320. Its totient is φ = 6935040.

The previous prime is 23398117. The next prime is 23398129. The reversal of 23398128 is 82189332.

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 = 23398092 and 23398101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23398129) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 54073 + ... + 54503.

It is an arithmetic number, because the mean of its divisors is an integer number (609336).

Almost surely, 2^23398128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23398128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36560160).

23398128 is an abundant number, since it is smaller than the sum of its proper divisors (49722192).

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

23398128 is a wasteful number, since it uses less digits than its factorization.

23398128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487 (or 478 counting only the distinct ones).

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

The square root of 23398128 is about 4837.1611509231. The cubic root of 23398128 is about 286.0182230389.

The spelling of 23398128 in words is "twenty-three million, three hundred ninety-eight thousand, one hundred twenty-eight".