20490162 has 32 divisors (see below), whose sum is σ = 51093504. Its totient is φ = 5322000.

The previous prime is 20490161. The next prime is 20490181. The reversal of 20490162 is 26109402.

It is not an unprimeable number, because it can be changed into a prime (20490161) 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 15 ways as a sum of consecutive naturals, for example, 21714 + ... + 22637.

It is an arithmetic number, because the mean of its divisors is an integer number (1596672).

Almost surely, 2^20490162 is an apocalyptic number.

20490162 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20490162 is an abundant number, since it is smaller than the sum of its proper divisors (30603342).

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

20490162 is a wasteful number, since it uses less digits than its factorization.

20490162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44374.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 20490162 is about 4526.6060133394. The cubic root of 20490162 is about 273.6413960055.

Adding to 20490162 its reverse (26109402), we get a palindrome (46599564).

The spelling of 20490162 in words is "twenty million, four hundred ninety thousand, one hundred sixty-two".