2784420 has 72 divisors (see below), whose sum is σ = 8736000. Its totient is φ = 717120.

The previous prime is 2784373. The next prime is 2784473. The reversal of 2784420 is 244872.

2784420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5331 + ... + 5829.

2^2784420 is an apocalyptic number.

2784420 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 2784420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4368000).

2784420 is an abundant number, since it is smaller than the sum of its proper divisors (5951580).

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

2784420 is a wasteful number, since it uses less digits than its factorization.

2784420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 2784420 is about 1668.6581435393. The cubic root of 2784420 is about 140.6840670383.

The spelling of 2784420 in words is "two million, seven hundred eighty-four thousand, four hundred twenty".