23206335240 has 128 divisors (see below), whose sum is σ = 75989404800. Its totient is φ = 5622712320.

The previous prime is 23206335233. The next prime is 23206335371. The reversal of 23206335240 is 4253360232.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 23206335198 and 23206335207.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3260806 + ... + 3267914.

It is an arithmetic number, because the mean of its divisors is an integer number (593667225).

Almost surely, 2^23206335240 is an apocalyptic number.

23206335240 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 23206335240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37994702400).

23206335240 is an abundant number, since it is smaller than the sum of its proper divisors (52783069560).

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

23206335240 is a wasteful number, since it uses less digits than its factorization.

23206335240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9607 (or 9603 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 23206335240 its reverse (4253360232), we get a palindrome (27459695472).

The spelling of 23206335240 in words is "twenty-three billion, two hundred six million, three hundred thirty-five thousand, two hundred forty".