20460986 has 64 divisors (see below), whose sum is σ = 40830720. Its totient is φ = 7464960.

The previous prime is 20460977. The next prime is 20460989. The reversal of 20460986 is 68906402.

It is not an unprimeable number, because it can be changed into a prime (20460989) 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 31 ways as a sum of consecutive naturals, for example, 210890 + ... + 210986.

It is an arithmetic number, because the mean of its divisors is an integer number (637980).

Almost surely, 2^20460986 is an apocalyptic number.

20460986 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20460986 is a deficient number, since it is larger than the sum of its proper divisors (20369734).

20460986 is a wasteful number, since it uses less digits than its factorization.

20460986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 20460986 is about 4523.3821417165. The cubic root of 20460986 is about 273.5114547238.

The spelling of 20460986 in words is "twenty million, four hundred sixty thousand, nine hundred eighty-six".