23134720 has 80 divisors (see below), whose sum is σ = 63442368. Its totient is φ = 7925760.

The previous prime is 23134703. The next prime is 23134729. The reversal of 23134720 is 2743132.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 23134691 and 23134700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23134729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17275 + ... + 18565.

Almost surely, 2^23134720 is an apocalyptic number.

23134720 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 23134720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31721184).

23134720 is an abundant number, since it is smaller than the sum of its proper divisors (40307648).

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

23134720 is an equidigital number, since it uses as much as digits as its factorization.

23134720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321 (or 1305 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 23134720 is about 4809.8565467174. The cubic root of 23134720 is about 284.9408721085.

Adding to 23134720 its reverse (2743132), we get a palindrome (25877852).

The spelling of 23134720 in words is "twenty-three million, one hundred thirty-four thousand, seven hundred twenty".