2978720 has 24 divisors (see below), whose sum is σ = 7037604. Its totient is φ = 1191424.

The previous prime is 2978713. The next prime is 2978737. The reversal of 2978720 is 278792.

2978720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2808976 + 169744 = 1676^2 + 412^2 .

It is a plaindrome in base 14.

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 3 ways as a sum of consecutive naturals, for example, 9149 + ... + 9468.

2^2978720 is an apocalyptic number.

2978720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2978720 is an abundant number, since it is smaller than the sum of its proper divisors (4058884).

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

2978720 is a wasteful number, since it uses less digits than its factorization.

2978720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18632 (or 18624 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 2978720 is about 1725.8968682978. The cubic root of 2978720 is about 143.8831356361.

The spelling of 2978720 in words is "two million, nine hundred seventy-eight thousand, seven hundred twenty".