20030136 has 32 divisors (see below), whose sum is σ = 57229440. Its totient is φ = 5722848.

The previous prime is 20030117. The next prime is 20030137. The reversal of 20030136 is 63103002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030137) 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 7 ways as a sum of consecutive naturals, for example, 59446 + ... + 59781.

It is an arithmetic number, because the mean of its divisors is an integer number (1788420).

Almost surely, 2^20030136 is an apocalyptic number.

It is an amenable number.

20030136 is an abundant number, since it is smaller than the sum of its proper divisors (37199304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20030136 is a wasteful number, since it uses less digits than its factorization.

20030136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119243 (or 119239 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 20030136 is about 4475.5039939654. The cubic root of 20030136 is about 271.5780293885.

Adding to 20030136 its reverse (63103002), we get a palindrome (83133138).

The spelling of 20030136 in words is "twenty million, thirty thousand, one hundred thirty-six".