2078172 has 18 divisors (see below), whose sum is σ = 5253248. Its totient is φ = 692712.

The previous prime is 2078161. The next prime is 2078177. The reversal of 2078172 is 2718702.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×2078172³ = 26925620603327233344, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2078177) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28828 + ... + 28899.

2^2078172 is an apocalyptic number.

It is an amenable number.

2078172 is an abundant number, since it is smaller than the sum of its proper divisors (3175076).

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

2078172 is a wasteful number, since it uses less digits than its factorization.

2078172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57737 (or 57732 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 2078172 is about 1441.5866259091. The cubic root of 2078172 is about 127.6126800880.

The spelling of 2078172 in words is "two million, seventy-eight thousand, one hundred seventy-two".