20247263860 has 48 divisors (see below), whose sum is σ = 44414044416. Its totient is φ = 7738725632.

The previous prime is 20247263851. The next prime is 20247263893. The reversal of 20247263860 is 6836274202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 429792 + ... + 474568.

It is an arithmetic number, because the mean of its divisors is an integer number (925292592).

Almost surely, 2^20247263860 is an apocalyptic number.

20247263860 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 20247263860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22207022208).

20247263860 is an abundant number, since it is smaller than the sum of its proper divisors (24166780556).

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

20247263860 is a wasteful number, since it uses less digits than its factorization.

20247263860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45792 (or 45790 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 20247263860 in words is "twenty billion, two hundred forty-seven million, two hundred sixty-three thousand, eight hundred sixty".