20002534 has 16 divisors (see below), whose sum is σ = 30715200. Its totient is φ = 9766504.

The previous prime is 20002531. The next prime is 20002537. The reversal of 20002534 is 43520002.

It is an interprime number because it is at equal distance from previous prime (20002531) and next prime (20002537).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20649 + ... + 21595.

It is an arithmetic number, because the mean of its divisors is an integer number (1919700).

Almost surely, 2^20002534 is an apocalyptic number.

20002534 is a deficient number, since it is larger than the sum of its proper divisors (10712666).

20002534 is a wasteful number, since it uses less digits than its factorization.

20002534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 20002534 is about 4472.4192558391. The cubic root of 20002534 is about 271.4532250658.

Adding to 20002534 its reverse (43520002), we get a palindrome (63522536).

The spelling of 20002534 in words is "twenty million, two thousand, five hundred thirty-four".