23020134240 has 96 divisors (see below), whose sum is σ = 72742652640. Its totient is φ = 6119297024.

The previous prime is 23020134239. The next prime is 23020134259. The reversal of 23020134240 is 4243102032.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76516 + ... + 227804.

It is an arithmetic number, because the mean of its divisors is an integer number (757735965).

Almost surely, 2^23020134240 is an apocalyptic number.

23020134240 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 23020134240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36371326320).

23020134240 is an abundant number, since it is smaller than the sum of its proper divisors (49722518400).

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

23020134240 is a wasteful number, since it uses less digits than its factorization.

23020134240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151624 (or 151616 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 23020134240 its reverse (4243102032), we get a palindrome (27263236272).

The spelling of 23020134240 in words is "twenty-three billion, twenty million, one hundred thirty-four thousand, two hundred forty".