2978244 has 18 divisors (see below), whose sum is σ = 7528430. Its totient is φ = 992736.

The previous prime is 2978233. The next prime is 2978251. The reversal of 2978244 is 4428792.

2978244 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 only one way, i.e., 2433600 + 544644 = 1560^2 + 738^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 82729 = 2978244 / (2 + 9 + 7 + 8 + 2 + 4 + 4).

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 2978199 and 2978208.

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 5 ways as a sum of consecutive naturals, for example, 41329 + ... + 41400.

2^2978244 is an apocalyptic number.

It is an amenable number.

2978244 is an abundant number, since it is smaller than the sum of its proper divisors (4550186).

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

2978244 is a wasteful number, since it uses less digits than its factorization.

2978244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82739 (or 82734 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 2978244 is about 1725.7589634709. The cubic root of 2978244 is about 143.8754710440.

The spelling of 2978244 in words is "two million, nine hundred seventy-eight thousand, two hundred forty-four".