20603713240 has 64 divisors (see below), whose sum is σ = 53234496000. Its totient is φ = 7097927040.

The previous prime is 20603713211. The next prime is 20603713279. The reversal of 20603713240 is 4231730602.

It is a junction number, because it is equal to n+sod(n) for n = 20603713199 and 20603713208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1223920 + ... + 1240639.

It is an arithmetic number, because the mean of its divisors is an integer number (831789000).

Almost surely, 2^20603713240 is an apocalyptic number.

20603713240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20603713240 is an abundant number, since it is smaller than the sum of its proper divisors (32630782760).

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

20603713240 is a wasteful number, since it uses less digits than its factorization.

20603713240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2464600 (or 2464596 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The spelling of 20603713240 in words is "twenty billion, six hundred three million, seven hundred thirteen thousand, two hundred forty".