2081772 has 72 divisors (see below), whose sum is σ = 6569472. Its totient is φ = 540000.

The previous prime is 2081749. The next prime is 2081777. The reversal of 2081772 is 2771802.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2081777) 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, 2397 + ... + 3147.

2^2081772 is an apocalyptic number.

2081772 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 2081772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3284736).

2081772 is an abundant number, since it is smaller than the sum of its proper divisors (4487700).

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

2081772 is a wasteful number, since it uses less digits than its factorization.

2081772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779 (or 774 counting only the distinct ones).

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

The square root of 2081772 is about 1442.8347098680. The cubic root of 2081772 is about 127.6863250395.

The spelling of 2081772 in words is "two million, eighty-one thousand, seven hundred seventy-two".