20933328 has 40 divisors (see below), whose sum is σ = 58239328. Its totient is φ = 6440832.

The previous prime is 20933323. The next prime is 20933333. The reversal of 20933328 is 82333902.

It is an interprime number because it is at equal distance from previous prime (20933323) and next prime (20933333).

It is a junction number, because it is equal to n+sod(n) for n = 20933295 and 20933304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20933323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16150 + ... + 17397.

Almost surely, 2^20933328 is an apocalyptic number.

It is an amenable number.

20933328 is an abundant number, since it is smaller than the sum of its proper divisors (37306000).

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

20933328 is a wasteful number, since it uses less digits than its factorization.

20933328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33571 (or 33565 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 20933328 is about 4575.2954002993. The cubic root of 20933328 is about 275.6001350968.

The spelling of 20933328 in words is "twenty million, nine hundred thirty-three thousand, three hundred twenty-eight".