20133238 has 8 divisors (see below), whose sum is σ = 30280680. Its totient is φ = 10039680.

The previous prime is 20133199. The next prime is 20133247. The reversal of 20133238 is 83233102.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12523 + ... + 14038.

It is an arithmetic number, because the mean of its divisors is an integer number (3785085).

Almost surely, 2^20133238 is an apocalyptic number.

20133238 is a deficient number, since it is larger than the sum of its proper divisors (10147442).

20133238 is a wasteful number, since it uses less digits than its factorization.

20133238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26942.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 20133238 is about 4487.0076888724. The cubic root of 20133238 is about 272.0432006786.

The spelling of 20133238 in words is "twenty million, one hundred thirty-three thousand, two hundred thirty-eight".