20133996 has 48 divisors (see below), whose sum is σ = 49795200. Its totient is φ = 6314112.

The previous prime is 20133989. The next prime is 20134003. The reversal of 20133996 is 69933102.

It is an interprime number because it is at equal distance from previous prime (20133989) and next prime (20134003).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52935 + ... + 53313.

It is an arithmetic number, because the mean of its divisors is an integer number (1037400).

Almost surely, 2^20133996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20133996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24897600).

20133996 is an abundant number, since it is smaller than the sum of its proper divisors (29661204).

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

20133996 is a wasteful number, since it uses less digits than its factorization.

20133996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 20133996 is about 4487.0921541684. The cubic root of 20133996 is about 272.0466147040.

The spelling of 20133996 in words is "twenty million, one hundred thirty-three thousand, nine hundred ninety-six".