20828316 has 24 divisors (see below), whose sum is σ = 48952960. Its totient is φ = 6892272.

The previous prime is 20828309. The next prime is 20828323. The reversal of 20828316 is 61382802.

It is an interprime number because it is at equal distance from previous prime (20828309) and next prime (20828323).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4576 + ... + 7911.

Almost surely, 2^20828316 is an apocalyptic number.

It is an amenable number.

20828316 is an abundant number, since it is smaller than the sum of its proper divisors (28124644).

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

20828316 is a wasteful number, since it uses less digits than its factorization.

20828316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12633 (or 12631 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 20828316 is about 4563.8049914518. The cubic root of 20828316 is about 275.1385131415.

The spelling of 20828316 in words is "twenty million, eight hundred twenty-eight thousand, three hundred sixteen".