2978723 has 12 divisors (see below), whose sum is σ = 3455592. Its totient is φ = 2545920.

The previous prime is 2978713. The next prime is 2978737. The reversal of 2978723 is 3278792.

It is not a de Polignac number, because 2978723 - 2¹² = 2974627 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (2978713) 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 11 ways as a sum of consecutive naturals, for example, 2711 + ... + 3647.

It is an arithmetic number, because the mean of its divisors is an integer number (287966).

2^2978723 is an apocalyptic number.

2978723 is a deficient number, since it is larger than the sum of its proper divisors (476869).

2978723 is a wasteful number, since it uses less digits than its factorization.

2978723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982 (or 965 counting only the distinct ones).

The product of its digits is 42336, while the sum is 38.

The square root of 2978723 is about 1725.8977374109. The cubic root of 2978723 is about 143.8831839398.

The spelling of 2978723 in words is "two million, nine hundred seventy-eight thousand, seven hundred twenty-three".