20420162 has 48 divisors (see below), whose sum is σ = 38313600. Its totient is φ = 8156736.

The previous prime is 20420129. The next prime is 20420167. The reversal of 20420162 is 26102402.

It is a super-2 number, since 2×20420162² = 833966032212488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 20420162.

It is not an unprimeable number, because it can be changed into a prime (20420167) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198203 + ... + 198305.

It is an arithmetic number, because the mean of its divisors is an integer number (798200).

Almost surely, 2^20420162 is an apocalyptic number.

20420162 is a deficient number, since it is larger than the sum of its proper divisors (17893438).

20420162 is a wasteful number, since it uses less digits than its factorization.

20420162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 20420162 is about 4518.8673359593. The cubic root of 20420162 is about 273.3294291861.

Adding to 20420162 its reverse (26102402), we get a palindrome (46522564).

The spelling of 20420162 in words is "twenty million, four hundred twenty thousand, one hundred sixty-two".