2978873 has 4 divisors (see below), whose sum is σ = 2982900. Its totient is φ = 2974848.

The previous prime is 2978869. The next prime is 2978917. The reversal of 2978873 is 3788792.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1605289 + 1373584 = 1267^2 + 1172^2 .

It is a cyclic number.

It is not a de Polignac number, because 2978873 - 2² = 2978869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2978273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548 + ... + 2501.

It is an arithmetic number, because the mean of its divisors is an integer number (745725).

2^2978873 is an apocalyptic number.

It is an amenable number.

2978873 is a deficient number, since it is larger than the sum of its proper divisors (4027).

2978873 is an equidigital number, since it uses as much as digits as its factorization.

2978873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4026.

The product of its digits is 169344, while the sum is 44.

The square root of 2978873 is about 1725.9411925092. The cubic root of 2978873 is about 143.8855990816.

The spelling of 2978873 in words is "two million, nine hundred seventy-eight thousand, eight hundred seventy-three".