20172162 has 16 divisors (see below), whose sum is σ = 40392000. Its totient is φ = 6716112.

The previous prime is 20172161. The next prime is 20172193. The reversal of 20172162 is 26127102.

It is a super-2 number, since 2×20172162² = 813832239508488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20172161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5964 + ... + 8712.

It is an arithmetic number, because the mean of its divisors is an integer number (2524500).

Almost surely, 2^20172162 is an apocalyptic number.

20172162 is an abundant number, since it is smaller than the sum of its proper divisors (20219838).

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

20172162 is a wasteful number, since it uses less digits than its factorization.

20172162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3977.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 20172162 is about 4491.3430062733. The cubic root of 20172162 is about 272.2184033771.

Adding to 20172162 its reverse (26127102), we get a palindrome (46299264).

The spelling of 20172162 in words is "twenty million, one hundred seventy-two thousand, one hundred sixty-two".