2956778 has 8 divisors (see below), whose sum is σ = 4838400. Its totient is φ = 1343980.

The previous prime is 2956769. The next prime is 2956783. The reversal of 2956778 is 8776592.

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

It is a super-2 number, since 2×2956778² = 17485072282568, which contains 22 as substring.

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, 67178 + ... + 67221.

It is an arithmetic number, because the mean of its divisors is an integer number (604800).

2^2956778 is an apocalyptic number.

2956778 is a deficient number, since it is larger than the sum of its proper divisors (1881622).

2956778 is a wasteful number, since it uses less digits than its factorization.

2956778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134412.

The product of its digits is 211680, while the sum is 44.

The square root of 2956778 is about 1719.5284237255. The cubic root of 2956778 is about 143.5289714761.

The spelling of 2956778 in words is "two million, nine hundred fifty-six thousand, seven hundred seventy-eight".