20330136 has 32 divisors (see below), whose sum is σ = 56473200. Its totient is φ = 6776640.

The previous prime is 20330129. The next prime is 20330143. The reversal of 20330136 is 63103302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20330129) and next prime (20330143).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46845 + ... + 47276.

Almost surely, 2^20330136 is an apocalyptic number.

It is an amenable number.

20330136 is an abundant number, since it is smaller than the sum of its proper divisors (36143064).

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

20330136 is a wasteful number, since it uses less digits than its factorization.

20330136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94136 (or 94126 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 20330136 is about 4508.8952083631. The cubic root of 20330136 is about 272.9271632762.

Adding to 20330136 its reverse (63103302), we get a palindrome (83433438).

The spelling of 20330136 in words is "twenty million, three hundred thirty thousand, one hundred thirty-six".