20432133 has 12 divisors (see below), whose sum is σ = 29997708. Its totient is φ = 13397760.

The previous prime is 20432123. The next prime is 20432143. The reversal of 20432133 is 33123402.

It is an interprime number because it is at equal distance from previous prime (20432123) and next prime (20432143).

It can be written as a sum of positive squares in 2 ways, for example, as 3932289 + 16499844 = 1983^2 + 4062^2 .

It is not a de Polignac number, because 20432133 - 2⁴ = 20432117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20432123) 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, 18060 + ... + 19157.

It is an arithmetic number, because the mean of its divisors is an integer number (2499809).

Almost surely, 2^20432133 is an apocalyptic number.

It is an amenable number.

20432133 is a deficient number, since it is larger than the sum of its proper divisors (9565575).

20432133 is a wasteful number, since it uses less digits than its factorization.

20432133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37284 (or 37281 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 20432133 is about 4520.1916994747. The cubic root of 20432133 is about 273.3828304505.

Adding to 20432133 its reverse (33123402), we get a palindrome (53555535).

The spelling of 20432133 in words is "twenty million, four hundred thirty-two thousand, one hundred thirty-three".