20747057244 has 48 divisors (see below), whose sum is σ = 51282328608. Its totient is φ = 6505719808.

The previous prime is 20747057173. The next prime is 20747057251. The reversal of 20747057244 is 44275074702.

It is a junction number, because it is equal to n+sod(n) for n = 20747057196 and 20747057205.

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, 415594 + ... + 462830.

It is an arithmetic number, because the mean of its divisors is an integer number (1068381846).

Almost surely, 2^20747057244 is an apocalyptic number.

It is an amenable number.

20747057244 is an abundant number, since it is smaller than the sum of its proper divisors (30535271364).

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

20747057244 is a wasteful number, since it uses less digits than its factorization.

20747057244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49414 (or 49412 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 42.

The spelling of 20747057244 in words is "twenty billion, seven hundred forty-seven million, fifty-seven thousand, two hundred forty-four".