20810496 has 144 divisors (see below), whose sum is σ = 65408000. Its totient is φ = 5870592.

The previous prime is 20810483. The next prime is 20810501. The reversal of 20810496 is 69401802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263385 + ... + 263463.

Almost surely, 2^20810496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20810496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32704000).

20810496 is an abundant number, since it is smaller than the sum of its proper divisors (44597504).

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

20810496 is an frugal number, since it uses more digits than its factorization.

20810496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 20810496 is about 4561.8522553893. The cubic root of 20810496 is about 275.0600243631.

The spelling of 20810496 in words is "twenty million, eight hundred ten thousand, four hundred ninety-six".