20162636 has 12 divisors (see below), whose sum is σ = 37998912. Its totient is φ = 9305808.

The previous prime is 20162633. The next prime is 20162641. The reversal of 20162636 is 63626102.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (20162633) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 193820 + ... + 193923.

It is an arithmetic number, because the mean of its divisors is an integer number (3166576).

Almost surely, 2^20162636 is an apocalyptic number.

20162636 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20162636 is a deficient number, since it is larger than the sum of its proper divisors (17836276).

20162636 is a wasteful number, since it uses less digits than its factorization.

20162636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387760 (or 387758 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 20162636 is about 4490.2823964646. The cubic root of 20162636 is about 272.1755462818.

Adding to 20162636 its reverse (63626102), we get a palindrome (83788738).

The spelling of 20162636 in words is "twenty million, one hundred sixty-two thousand, six hundred thirty-six".