23403020240 has 80 divisors (see below), whose sum is σ = 55458950400. Its totient is φ = 9181810176.

The previous prime is 23403020219. The next prime is 23403020261. The reversal of 23403020240 is 4202030432.

It is an interprime number because it is at equal distance from previous prime (23403020219) and next prime (23403020261).

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

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 2180006 + ... + 2190714.

It is an arithmetic number, because the mean of its divisors is an integer number (693236880).

Almost surely, 2^23403020240 is an apocalyptic number.

23403020240 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 23403020240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27729475200).

23403020240 is an abundant number, since it is smaller than the sum of its proper divisors (32055930160).

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

23403020240 is a wasteful number, since it uses less digits than its factorization.

23403020240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11244 (or 11238 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 23403020240 its reverse (4202030432), we get a palindrome (27605050672).

The spelling of 23403020240 in words is "twenty-three billion, four hundred three million, twenty thousand, two hundred forty".