20322429 has 16 divisors (see below), whose sum is σ = 29393280. Its totient is φ = 12439040.

The previous prime is 20322427. The next prime is 20322433. The reversal of 20322429 is 92422302.

It is a cyclic number.

It is not a de Polignac number, because 20322429 - 2¹ = 20322427 is a prime.

It is a super-2 number, since 2×20322429² = 826002240920082, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20322399 and 20322408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20322427) 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 15 ways as a sum of consecutive naturals, for example, 2769 + ... + 6950.

It is an arithmetic number, because the mean of its divisors is an integer number (1837080).

Almost surely, 2^20322429 is an apocalyptic number.

It is an amenable number.

20322429 is a deficient number, since it is larger than the sum of its proper divisors (9070851).

20322429 is a wasteful number, since it uses less digits than its factorization.

20322429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9780.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 20322429 is about 4508.0404834030. The cubic root of 20322429 is about 272.8926707130.

The spelling of 20322429 in words is "twenty million, three hundred twenty-two thousand, four hundred twenty-nine".