20742506204 has 12 divisors (see below), whose sum is σ = 41485012464. Its totient is φ = 8889645504.

The previous prime is 20742506203. The next prime is 20742506221. The reversal of 20742506204 is 40260524702.

20742506204 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20742506203) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 370401869 + ... + 370401924.

It is an arithmetic number, because the mean of its divisors is an integer number (3457084372).

Almost surely, 2^20742506204 is an apocalyptic number.

It is an amenable number.

20742506204 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20742506204 is a wasteful number, since it uses less digits than its factorization.

20742506204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740803804 (or 740803802 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

The spelling of 20742506204 in words is "twenty billion, seven hundred forty-two million, five hundred six thousand, two hundred four".