23109408 has 96 divisors (see below), whose sum is σ = 77051520. Its totient is φ = 6600960.

The previous prime is 23109407. The next prime is 23109413. The reversal of 23109408 is 80490132.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×23109408² = 1068089476220928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (23109403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4138 + ... + 7958.

It is an arithmetic number, because the mean of its divisors is an integer number (802620).

Almost surely, 2^23109408 is an apocalyptic number.

23109408 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 23109408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38525760).

23109408 is an abundant number, since it is smaller than the sum of its proper divisors (53942112).

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

23109408 is a wasteful number, since it uses less digits than its factorization.

23109408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3847 (or 3833 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 23109408 is about 4807.2245630925. The cubic root of 23109408 is about 284.8369150062.

The spelling of 23109408 in words is "twenty-three million, one hundred nine thousand, four hundred eight".