2920778 has 8 divisors (see below), whose sum is σ = 5007072. Its totient is φ = 1251756.

The previous prime is 2920751. The next prime is 2920783. The reversal of 2920778 is 8770292.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104300 + ... + 104327.

It is an arithmetic number, because the mean of its divisors is an integer number (625884).

2^2920778 is an apocalyptic number.

2920778 is a deficient number, since it is larger than the sum of its proper divisors (2086294).

2920778 is a wasteful number, since it uses less digits than its factorization.

2920778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208636.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 2920778 is about 1709.0283789335. The cubic root of 2920778 is about 142.9440829839.

The spelling of 2920778 in words is "two million, nine hundred twenty thousand, seven hundred seventy-eight".