20485946 has 16 divisors (see below), whose sum is σ = 33180000. Its totient is φ = 9430128.

The previous prime is 20485943. The next prime is 20485967. The reversal of 20485946 is 64958402.

It is not an unprimeable number, because it can be changed into a prime (20485943) 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, 12185 + ... + 13763.

It is an arithmetic number, because the mean of its divisors is an integer number (2073750).

Almost surely, 2^20485946 is an apocalyptic number.

20485946 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20485946 is a deficient number, since it is larger than the sum of its proper divisors (12694054).

20485946 is a wasteful number, since it uses less digits than its factorization.

20485946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2093.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 20485946 is about 4526.1402983116. The cubic root of 20485946 is about 273.6226268150.

The spelling of 20485946 in words is "twenty million, four hundred eighty-five thousand, nine hundred forty-six".