20404005734 has 8 divisors (see below), whose sum is σ = 34978295568. Its totient is φ = 8744573880.

The previous prime is 20404005689. The next prime is 20404005737. The reversal of 20404005734 is 43750040402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20404005697 and 20404005706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20404005737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 728714477 + ... + 728714504.

It is an arithmetic number, because the mean of its divisors is an integer number (4372286946).

Almost surely, 2^20404005734 is an apocalyptic number.

20404005734 is a deficient number, since it is larger than the sum of its proper divisors (14574289834).

20404005734 is a wasteful number, since it uses less digits than its factorization.

20404005734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457428990.

The product of its (nonzero) digits is 13440, while the sum is 29.

The spelling of 20404005734 in words is "twenty billion, four hundred four million, five thousand, seven hundred thirty-four".