20429193 has 12 divisors (see below), whose sum is σ = 27926384. Its totient is φ = 13284000.

The previous prime is 20429191. The next prime is 20429203. The reversal of 20429193 is 39192402.

It is not a de Polignac number, because 20429193 - 2¹ = 20429191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20429193.

It is not an unprimeable number, because it can be changed into a prime (20429191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3018 + ... + 7068.

Almost surely, 2^20429193 is an apocalyptic number.

It is an amenable number.

20429193 is a deficient number, since it is larger than the sum of its proper divisors (7497191).

20429193 is an equidigital number, since it uses as much as digits as its factorization.

20429193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4136 (or 4095 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 20429193 is about 4519.8664803288. The cubic root of 20429193 is about 273.3697173788.

The spelling of 20429193 in words is "twenty million, four hundred twenty-nine thousand, one hundred ninety-three".