20001434 has 8 divisors (see below), whose sum is σ = 30299508. Its totient is φ = 9901600.

The previous prime is 20001389. The next prime is 20001439. The reversal of 20001434 is 43410002.

It can be written as a sum of positive squares in 2 ways, for example, as 19829209 + 172225 = 4453^2 + 415^2 .

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

20001434 is a modest number, since divided by 1434 gives 2 as remainder.

It is not an unprimeable number, because it can be changed into a prime (20001439) 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 3 ways as a sum of consecutive naturals, for example, 49307 + ... + 49710.

Almost surely, 2^20001434 is an apocalyptic number.

20001434 is a deficient number, since it is larger than the sum of its proper divisors (10298074).

20001434 is a wasteful number, since it uses less digits than its factorization.

20001434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99120.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20001434 is about 4472.2962781998. The cubic root of 20001434 is about 271.4482489626.

Adding to 20001434 its reverse (43410002), we get a palindrome (63411436).

The spelling of 20001434 in words is "twenty million, one thousand, four hundred thirty-four".