2727820 has 48 divisors (see below), whose sum is σ = 6205248. Its totient is φ = 1003520.

The previous prime is 2727817. The next prime is 2727821. The reversal of 2727820 is 287272.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2727821) 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, 24084 + ... + 24196.

It is an arithmetic number, because the mean of its divisors is an integer number (129276).

2^2727820 is an apocalyptic number.

2727820 is a gapful number since it is divisible by the number (20) 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 2727820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3102624).

2727820 is an abundant number, since it is smaller than the sum of its proper divisors (3477428).

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

2727820 is a wasteful number, since it uses less digits than its factorization.

2727820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 2727820 is about 1651.6113344247. The cubic root of 2727820 is about 139.7242873064.

The spelling of 2727820 in words is "two million, seven hundred twenty-seven thousand, eight hundred twenty".