23220244243240 has 128 divisors (see below), whose sum is σ = 57334776912000. Its totient is φ = 8393541760000.

The previous prime is 23220244243181. The next prime is 23220244243277. The reversal of 23220244243240 is 4234244202232.

It is a junction number, because it is equal to n+sod(n) for n = 23220244243196 and 23220244243205.

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, 56007426 + ... + 56420494.

It is an arithmetic number, because the mean of its divisors is an integer number (447927944625).

Almost surely, 2^{23220244243240} is an apocalyptic number.

23220244243240 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 23220244243240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28667388456000).

23220244243240 is an abundant number, since it is smaller than the sum of its proper divisors (34114532668760).

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

23220244243240 is a wasteful number, since it uses less digits than its factorization.

23220244243240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413851 (or 413847 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 34.

Adding to 23220244243240 its reverse (4234244202232), we get a palindrome (27454488445472).

The spelling of 23220244243240 in words is "twenty-three trillion, two hundred twenty billion, two hundred forty-four million, two hundred forty-three thousand, two hundred forty".