20828367 has 32 divisors (see below), whose sum is σ = 35509760. Its totient is φ = 11819520.

The previous prime is 20828333. The next prime is 20828371. The reversal of 20828367 is 76382802.

It is a happy number.

It is not a de Polignac number, because 20828367 - 2¹⁴ = 20811983 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20828387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36192 + ... + 36762.

It is an arithmetic number, because the mean of its divisors is an integer number (1109680).

Almost surely, 2^20828367 is an apocalyptic number.

20828367 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20828367 is a deficient number, since it is larger than the sum of its proper divisors (14681393).

20828367 is a wasteful number, since it uses less digits than its factorization.

20828367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780 (or 774 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 20828367 is about 4563.8105788913. The cubic root of 20828367 is about 275.1387377084.

The spelling of 20828367 in words is "twenty million, eight hundred twenty-eight thousand, three hundred sixty-seven".