20828376 has 24 divisors (see below), whose sum is σ = 56410380. Its totient is φ = 6942768.

The previous prime is 20828371. The next prime is 20828387. The reversal of 20828376 is 67382802.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20828376.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20828371) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 144570 + ... + 144713.

Almost surely, 2^20828376 is an apocalyptic number.

It is an amenable number.

20828376 is an abundant number, since it is smaller than the sum of its proper divisors (35582004).

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

20828376 is a wasteful number, since it uses less digits than its factorization.

20828376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289295 (or 289288 counting only the distinct ones).

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

The square root of 20828376 is about 4563.8115649093. The cubic root of 20828376 is about 275.1387773379.

The spelling of 20828376 in words is "twenty million, eight hundred twenty-eight thousand, three hundred seventy-six".