2774556 has 36 divisors (see below), whose sum is σ = 7206472. Its totient is φ = 899424.

The previous prime is 2774543. The next prime is 2774557. The reversal of 2774556 is 6554772.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2774556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2774557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 291 + ... + 2373.

2^2774556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2774556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3603236).

2774556 is an abundant number, since it is smaller than the sum of its proper divisors (4431916).

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

2774556 is a wasteful number, since it uses less digits than its factorization.

2774556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130 (or 2125 counting only the distinct ones).

The product of its digits is 58800, while the sum is 36.

The square root of 2774556 is about 1665.6998529147. The cubic root of 2774556 is about 140.5177428064.

The spelling of 2774556 in words is "two million, seven hundred seventy-four thousand, five hundred fifty-six".