20420982 has 24 divisors (see below), whose sum is σ = 44475600. Its totient is φ = 6771600.

The previous prime is 20420977. The next prime is 20420989. The reversal of 20420982 is 28902402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20420989) 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, 732 + ... + 6432.

It is an arithmetic number, because the mean of its divisors is an integer number (1853150).

Almost surely, 2^20420982 is an apocalyptic number.

20420982 is an abundant number, since it is smaller than the sum of its proper divisors (24054618).

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

20420982 is a wasteful number, since it uses less digits than its factorization.

20420982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5908 (or 5905 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 20420982 is about 4518.9580657492. The cubic root of 20420982 is about 273.3330877782. Note that the first 3 decimals are identical.

The spelling of 20420982 in words is "twenty million, four hundred twenty thousand, nine hundred eighty-two".