20447240260 has 96 divisors (see below), whose sum is σ = 46047052800. Its totient is φ = 7603683840.

The previous prime is 20447240201. The next prime is 20447240267. The reversal of 20447240260 is 6204274402.

It is not an unprimeable number, because it can be changed into a prime (20447240267) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14208621 + ... + 14210059.

It is an arithmetic number, because the mean of its divisors is an integer number (479656800).

Almost surely, 2^20447240260 is an apocalyptic number.

20447240260 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 20447240260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23023526400).

20447240260 is an abundant number, since it is smaller than the sum of its proper divisors (25599812540).

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

20447240260 is a wasteful number, since it uses less digits than its factorization.

20447240260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141 (or 2139 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 31.

The spelling of 20447240260 in words is "twenty billion, four hundred forty-seven million, two hundred forty thousand, two hundred sixty".