23146240 has 108 divisors (see below), whose sum is σ = 60596424. Its totient is φ = 8466432.

The previous prime is 23146229. The next prime is 23146247. The reversal of 23146240 is 4264132.

It is a happy number.

It is a super-2 number, since 2×23146240² = 1071496852275200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23146247) 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, 216267 + ... + 216373.

It is an arithmetic number, because the mean of its divisors is an integer number (561078).

Almost surely, 2^23146240 is an apocalyptic number.

23146240 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 23146240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30298212).

23146240 is an abundant number, since it is smaller than the sum of its proper divisors (37450184).

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

23146240 is a wasteful number, since it uses less digits than its factorization.

23146240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 23146240 is about 4811.0539385877. The cubic root of 23146240 is about 284.9881599678.

The spelling of 23146240 in words is "twenty-three million, one hundred forty-six thousand, two hundred forty".