20434130 has 8 divisors (see below), whose sum is σ = 36781452. Its totient is φ = 8173648.

The previous prime is 20434109. The next prime is 20434147. The reversal of 20434130 is 3143402.

It can be written as a sum of positive squares in 2 ways, for example, as 20421361 + 12769 = 4519^2 + 113^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 20434099 and 20434108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1021697 + ... + 1021716.

Almost surely, 2^20434130 is an apocalyptic number.

20434130 is a deficient number, since it is larger than the sum of its proper divisors (16347322).

20434130 is a wasteful number, since it uses less digits than its factorization.

20434130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043420.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 20434130 is about 4520.4125917885. The cubic root of 20434130 is about 273.3917368094.

Adding to 20434130 its reverse (3143402), we get a palindrome (23577532).

The spelling of 20434130 in words is "twenty million, four hundred thirty-four thousand, one hundred thirty".