2978764 has 12 divisors (see below), whose sum is σ = 5392800. Its totient is φ = 1437968.

The previous prime is 2978749. The next prime is 2978771. The reversal of 2978764 is 4678792.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 2978764.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12724 + ... + 12955.

It is an arithmetic number, because the mean of its divisors is an integer number (449400).

2^2978764 is an apocalyptic number.

It is an amenable number.

2978764 is a deficient number, since it is larger than the sum of its proper divisors (2414036).

2978764 is a wasteful number, since it uses less digits than its factorization.

2978764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25712 (or 25710 counting only the distinct ones).

The product of its digits is 169344, while the sum is 43.

The square root of 2978764 is about 1725.9096152464. The cubic root of 2978764 is about 143.8838440866.

The spelling of 2978764 in words is "two million, nine hundred seventy-eight thousand, seven hundred sixty-four".