23409880 has 48 divisors (see below), whose sum is σ = 57052080. Its totient is φ = 8641152.

The previous prime is 23409877. The next prime is 23409887. The reversal of 23409880 is 8890432.

23409880 = T₈₁₆ + T₈₁₇ + ... + T₈₈₀.

It is a super-2 number, since 2×23409880² = 1096044963228800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23409887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5029 + ... + 8491.

It is an arithmetic number, because the mean of its divisors is an integer number (1188585).

Almost surely, 2^23409880 is an apocalyptic number.

23409880 is a gapful number since it is divisible by the number (20) 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 23409880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28526040).

23409880 is an abundant number, since it is smaller than the sum of its proper divisors (33642200).

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

23409880 is a wasteful number, since it uses less digits than its factorization.

23409880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500 (or 3483 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 23409880 is about 4838.3757605213. The cubic root of 23409880 is about 286.0661004241.

The spelling of 23409880 in words is "twenty-three million, four hundred nine thousand, eight hundred eighty".