20382810 has 96 divisors (see below), whose sum is σ = 58340736. Its totient is φ = 4464000.

The previous prime is 20382799. The next prime is 20382823. The reversal of 20382810 is 1828302.

It is a super-2 number, since 2×20382810² = 830917886992200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 201760 + ... + 201860.

It is an arithmetic number, because the mean of its divisors is an integer number (607716).

Almost surely, 2^20382810 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20382810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29170368).

20382810 is an abundant number, since it is smaller than the sum of its proper divisors (37957926).

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

20382810 is a wasteful number, since it uses less digits than its factorization.

20382810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 20382810 is about 4514.7325502182. The cubic root of 20382810 is about 273.1626719049.

The spelling of 20382810 in words is "twenty million, three hundred eighty-two thousand, eight hundred ten".