20329005 has 8 divisors (see below), whose sum is σ = 32526432. Its totient is φ = 10842128.

The previous prime is 20329003. The next prime is 20329009. The reversal of 20329005 is 50092302.

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

It is a cyclic number.

It is not a de Polignac number, because 20329005 - 2¹ = 20329003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20329003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 677619 + ... + 677648.

It is an arithmetic number, because the mean of its divisors is an integer number (4065804).

Almost surely, 2^20329005 is an apocalyptic number.

It is an amenable number.

20329005 is a deficient number, since it is larger than the sum of its proper divisors (12197427).

20329005 is a wasteful number, since it uses less digits than its factorization.

20329005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355275.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 20329005 is about 4508.7697878690. The cubic root of 20329005 is about 272.9221020484.

The spelling of 20329005 in words is "twenty million, three hundred twenty-nine thousand, five".