20810484 has 36 divisors (see below), whose sum is σ = 52756704. Its totient is φ = 6916752.

The previous prime is 20810483. The next prime is 20810501. The reversal of 20810484 is 48401802.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20810483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16939 + ... + 18125.

It is an arithmetic number, because the mean of its divisors is an integer number (1465464).

Almost surely, 2^20810484 is an apocalyptic number.

It is an amenable number.

20810484 is an abundant number, since it is smaller than the sum of its proper divisors (31946220).

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

20810484 is a wasteful number, since it uses less digits than its factorization.

20810484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684 (or 1679 counting only the distinct ones).

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

The square root of 20810484 is about 4561.8509401338. The cubic root of 20810484 is about 275.0599714936.

The spelling of 20810484 in words is "twenty million, eight hundred ten thousand, four hundred eighty-four".