20328284 has 6 divisors (see below), whose sum is σ = 35574504. Its totient is φ = 10164140.

The previous prime is 20328257. The next prime is 20328307. The reversal of 20328284 is 48282302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2541032 + ... + 2541039.

It is an arithmetic number, because the mean of its divisors is an integer number (5929084).

Almost surely, 2^20328284 is an apocalyptic number.

It is an amenable number.

20328284 is a deficient number, since it is larger than the sum of its proper divisors (15246220).

20328284 is a wasteful number, since it uses less digits than its factorization.

20328284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5082075 (or 5082073 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 20328284 is about 4508.6898318691. The cubic root of 20328284 is about 272.9188754737.

The spelling of 20328284 in words is "twenty million, three hundred twenty-eight thousand, two hundred eighty-four".