2780484 has 48 divisors (see below), whose sum is σ = 7526400. Its totient is φ = 782496.

The previous prime is 2780467. The next prime is 2780501. The reversal of 2780484 is 4840872.

It is an interprime number because it is at equal distance from previous prime (2780467) and next prime (2780501).

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, 6427 + ... + 6845.

It is an arithmetic number, because the mean of its divisors is an integer number (156800).

2^2780484 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 2780484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3763200).

2780484 is an abundant number, since it is smaller than the sum of its proper divisors (4745916).

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

2780484 is a wasteful number, since it uses less digits than its factorization.

2780484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 2780484 is about 1667.4783356914. The cubic root of 2780484 is about 140.6177463913.

The spelling of 2780484 in words is "two million, seven hundred eighty thousand, four hundred eighty-four".