2769820 has 48 divisors (see below), whose sum is σ = 6320160. Its totient is φ = 1016064.

The previous prime is 2769791. The next prime is 2769841. The reversal of 2769820 is 289672.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13962 + ... + 14158.

It is an arithmetic number, because the mean of its divisors is an integer number (131670).

2^2769820 is an apocalyptic number.

2769820 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 2769820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3160080).

2769820 is an abundant number, since it is smaller than the sum of its proper divisors (3550340).

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

2769820 is a wasteful number, since it uses less digits than its factorization.

2769820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 2769820 is about 1664.2776210717. The cubic root of 2769820 is about 140.4377454974.

The spelling of 2769820 in words is "two million, seven hundred sixty-nine thousand, eight hundred twenty".