2978288 has 40 divisors (see below), whose sum is σ = 6197520. Its totient is φ = 1382400.

The previous prime is 2978273. The next prime is 2978299. The reversal of 2978288 is 8828792.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29438 + ... + 29538.

It is an arithmetic number, because the mean of its divisors is an integer number (154938).

2^2978288 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 2978288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3098760).

2978288 is an abundant number, since it is smaller than the sum of its proper divisors (3219232).

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

2978288 is a wasteful number, since it uses less digits than its factorization.

2978288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 219 counting only the distinct ones).

The product of its digits is 129024, while the sum is 44.

The square root of 2978288 is about 1725.7717114381. The cubic root of 2978288 is about 143.8761795700.

The spelling of 2978288 in words is "two million, nine hundred seventy-eight thousand, two hundred eighty-eight".