20828952 has 24 divisors (see below), whose sum is σ = 56411940. Its totient is φ = 6942960.

The previous prime is 20828923. The next prime is 20828953. The reversal of 20828952 is 25982802.

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

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20828953) 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, 144574 + ... + 144717.

Almost surely, 2^20828952 is an apocalyptic number.

It is an amenable number.

20828952 is an abundant number, since it is smaller than the sum of its proper divisors (35582988).

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

20828952 is a wasteful number, since it uses less digits than its factorization.

20828952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289303 (or 289296 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 20828952 is about 4563.8746696201. The cubic root of 20828952 is about 275.1413135970.

The spelling of 20828952 in words is "twenty million, eight hundred twenty-eight thousand, nine hundred fifty-two".