2773428 has 48 divisors (see below), whose sum is σ = 7480704. Its totient is φ = 783360.

The previous prime is 2773403. The next prime is 2773439. The reversal of 2773428 is 8243772.

Its product of digits (18816) is a multiple of the sum of its prime factors (392).

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, 11388 + ... + 11628.

It is an arithmetic number, because the mean of its divisors is an integer number (155848).

2^2773428 is an apocalyptic number.

2773428 is a gapful number since it is divisible by the number (28) 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 2773428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3740352).

2773428 is an abundant number, since it is smaller than the sum of its proper divisors (4707276).

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

2773428 is a wasteful number, since it uses less digits than its factorization.

2773428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 390 counting only the distinct ones).

The product of its digits is 18816, while the sum is 33.

The square root of 2773428 is about 1665.3612220777. The cubic root of 2773428 is about 140.4986976572.

The spelling of 2773428 in words is "two million, seven hundred seventy-three thousand, four hundred twenty-eight".