20334729 has 16 divisors (see below), whose sum is σ = 28675584. Its totient is φ = 12796800.

The previous prime is 20334709. The next prime is 20334733. The reversal of 20334729 is 92743302.

It is not a de Polignac number, because 20334729 - 2⁵ = 20334697 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20334696 and 20334705.

It is not an unprimeable number, because it can be changed into a prime (20334709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1147 + ... + 6479.

It is an arithmetic number, because the mean of its divisors is an integer number (1792224).

Almost surely, 2^20334729 is an apocalyptic number.

It is an amenable number.

20334729 is a deficient number, since it is larger than the sum of its proper divisors (8340855).

20334729 is a wasteful number, since it uses less digits than its factorization.

20334729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5408.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 20334729 is about 4509.4045061405. The cubic root of 20334729 is about 272.9477150336.

The spelling of 20334729 in words is "twenty million, three hundred thirty-four thousand, seven hundred twenty-nine".