20704057250 has 32 divisors (see below), whose sum is σ = 38770797312. Its totient is φ = 8278887600.

The previous prime is 20704057183. The next prime is 20704057289. The reversal of 20704057250 is 5275040702.

It is a super-2 number, since 2×20704057250² (a number of 21 digits) contains 22 as substring.

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, 854807 + ... + 878693.

It is an arithmetic number, because the mean of its divisors is an integer number (1211587416).

Almost surely, 2^20704057250 is an apocalyptic number.

20704057250 is a deficient number, since it is larger than the sum of its proper divisors (18066740062).

20704057250 is a wasteful number, since it uses less digits than its factorization.

20704057250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27371 (or 27361 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 32.

Adding to 20704057250 its reverse (5275040702), we get a palindrome (25979097952).

The spelling of 20704057250 in words is "twenty billion, seven hundred four million, fifty-seven thousand, two hundred fifty".