20290329 has 12 divisors (see below), whose sum is σ = 29392896. Its totient is φ = 13487832.

The previous prime is 20290327. The next prime is 20290331. The reversal of 20290329 is 92309202.

It is an interprime number because it is at equal distance from previous prime (20290327) and next prime (20290331).

It is not a de Polignac number, because 20290329 - 2¹ = 20290327 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20290327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 232 + ... + 6374.

It is an arithmetic number, because the mean of its divisors is an integer number (2449408).

Almost surely, 2^20290329 is an apocalyptic number.

It is an amenable number.

20290329 is a deficient number, since it is larger than the sum of its proper divisors (9102567).

20290329 is a wasteful number, since it uses less digits than its factorization.

20290329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6516 (or 6513 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 20290329 is about 4504.4787711787. The cubic root of 20290329 is about 272.7489137676.

The spelling of 20290329 in words is "twenty million, two hundred ninety thousand, three hundred twenty-nine".