2978291 has 4 divisors (see below), whose sum is σ = 2981784. Its totient is φ = 2974800.

The previous prime is 2978273. The next prime is 2978299. The reversal of 2978291 is 1928792.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2978291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2978299) 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, 476 + ... + 2486.

It is an arithmetic number, because the mean of its divisors is an integer number (745446).

2^2978291 is an apocalyptic number.

2978291 is a deficient number, since it is larger than the sum of its proper divisors (3493).

2978291 is a wasteful number, since it uses less digits than its factorization.

2978291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3492.

The product of its digits is 18144, while the sum is 38.

The square root of 2978291 is about 1725.7725806143. The cubic root of 2978291 is about 143.8762278783.

The spelling of 2978291 in words is "two million, nine hundred seventy-eight thousand, two hundred ninety-one".