23123040 has 96 divisors (see below), whose sum is σ = 74027520. Its totient is φ = 6065664.

The previous prime is 23123029. The next prime is 23123047. The reversal of 23123040 is 4032132.

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

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23123047) 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, 31801 + ... + 32519.

It is an arithmetic number, because the mean of its divisors is an integer number (771120).

Almost surely, 2^23123040 is an apocalyptic number.

23123040 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 23123040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37013760).

23123040 is an abundant number, since it is smaller than the sum of its proper divisors (50904480).

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

23123040 is a wasteful number, since it uses less digits than its factorization.

23123040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804 (or 796 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 23123040 is about 4808.6422200035. The cubic root of 23123040 is about 284.8929114440.

Adding to 23123040 its reverse (4032132), we get a palindrome (27155172).

The spelling of 23123040 in words is "twenty-three million, one hundred twenty-three thousand, forty".