20433130 has 8 divisors (see below), whose sum is σ = 36779652. Its totient is φ = 8173248.

The previous prime is 20433097. The next prime is 20433137. The reversal of 20433130 is 3133402.

It can be written as a sum of positive squares in 2 ways, for example, as 19722481 + 710649 = 4441^2 + 843^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20433137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1021647 + ... + 1021666.

Almost surely, 2^20433130 is an apocalyptic number.

20433130 is a deficient number, since it is larger than the sum of its proper divisors (16346522).

20433130 is a wasteful number, since it uses less digits than its factorization.

20433130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043320.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 20433130 is about 4520.3019810628. The cubic root of 20433130 is about 273.3872770127.

Adding to 20433130 its reverse (3133402), we get a palindrome (23566532).

The spelling of 20433130 in words is "twenty million, four hundred thirty-three thousand, one hundred thirty".