2988778 has 16 divisors (see below), whose sum is σ = 4868640. Its totient is φ = 1367856.

The previous prime is 2988767. The next prime is 2988779. The reversal of 2988778 is 8778892.

It is not an unprimeable number, because it can be changed into a prime (2988779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3201 + ... + 4027.

It is an arithmetic number, because the mean of its divisors is an integer number (304290).

2^2988778 is an apocalyptic number.

2988778 is a deficient number, since it is larger than the sum of its proper divisors (1879862).

2988778 is a wasteful number, since it uses less digits than its factorization.

2988778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981.

The product of its digits is 451584, while the sum is 49.

The square root of 2988778 is about 1728.8082600451. The cubic root of 2988778 is about 144.0448998360.

The spelling of 2988778 in words is "two million, nine hundred eighty-eight thousand, seven hundred seventy-eight".