2020172 has 36 divisors (see below), whose sum is σ = 4491144. Its totient is φ = 786240.

The previous prime is 2020171. The next prime is 2020181. The reversal of 2020172 is 2710202.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (2020171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1688 + ... + 2624.

It is an arithmetic number, because the mean of its divisors is an integer number (124754).

2^2020172 is an apocalyptic number.

2020172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2020172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2245572).

2020172 is an abundant number, since it is smaller than the sum of its proper divisors (2470972).

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

2020172 is a wasteful number, since it uses less digits than its factorization.

2020172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966 (or 957 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 2020172 is about 1421.3275484560. The cubic root of 2020172 is about 126.4142742786.

Adding to 2020172 its reverse (2710202), we get a palindrome (4730374).

The spelling of 2020172 in words is "two million, twenty thousand, one hundred seventy-two".