2851772 has 48 divisors (see below), whose sum is σ = 6386688. Its totient is φ = 1081920.

The previous prime is 2851741. The next prime is 2851777. The reversal of 2851772 is 2771582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2851777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14378 + ... + 14574.

It is an arithmetic number, because the mean of its divisors is an integer number (133056).

2^2851772 is an apocalyptic number.

2851772 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2851772 is the 1379-th pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2851772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3193344).

2851772 is an abundant number, since it is smaller than the sum of its proper divisors (3534916).

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

2851772 is a wasteful number, since it uses less digits than its factorization.

2851772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 264 counting only the distinct ones).

The product of its digits is 7840, while the sum is 32.

The square root of 2851772 is about 1688.7190411670. The cubic root of 2851772 is about 141.8093719250.

It can be divided in two parts, 28 and 51772, that multiplied together give a square (1449616 = 1204²).

The spelling of 2851772 in words is "two million, eight hundred fifty-one thousand, seven hundred seventy-two".