20812248 has 32 divisors (see below), whose sum is σ = 57812400. Its totient is φ = 6937344.

The previous prime is 20812247. The next prime is 20812271. The reversal of 20812248 is 84221802.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20812247) 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 7 ways as a sum of consecutive naturals, for example, 47961 + ... + 48392.

Almost surely, 2^20812248 is an apocalyptic number.

It is an amenable number.

20812248 is an abundant number, since it is smaller than the sum of its proper divisors (37000152).

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

20812248 is a wasteful number, since it uses less digits than its factorization.

20812248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96368 (or 96358 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 20812248 is about 4562.0442786102. The cubic root of 20812248 is about 275.0677430905.

The spelling of 20812248 in words is "twenty million, eight hundred twelve thousand, two hundred forty-eight".