20196429 has 32 divisors (see below), whose sum is σ = 30474240. Its totient is φ = 11793600.

The previous prime is 20196427. The next prime is 20196431. The reversal of 20196429 is 92469102.

It is an interprime number because it is at equal distance from previous prime (20196427) and next prime (20196431).

It is not a de Polignac number, because 20196429 - 2¹ = 20196427 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 20196429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20196427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158964 + ... + 159090.

It is an arithmetic number, because the mean of its divisors is an integer number (952320).

Almost surely, 2^20196429 is an apocalyptic number.

It is an amenable number.

20196429 is a deficient number, since it is larger than the sum of its proper divisors (10277811).

20196429 is a wasteful number, since it uses less digits than its factorization.

20196429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 20196429 is about 4494.0437247539. The cubic root of 20196429 is about 272.3275187147.

It can be divided in two parts, 2019 and 6429, that added together give a palindrome (8448).

The spelling of 20196429 in words is "twenty million, one hundred ninety-six thousand, four hundred twenty-nine".