2906978 has 4 divisors (see below), whose sum is σ = 4360470. Its totient is φ = 1453488.

The previous prime is 2906951. The next prime is 2906987. The reversal of 2906978 is 8796092.

2906978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2845969 + 61009 = 1687^2 + 247^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 726743 + ... + 726746.

2^2906978 is an apocalyptic number.

2906978 is a deficient number, since it is larger than the sum of its proper divisors (1453492).

2906978 is a wasteful number, since it uses less digits than its factorization.

2906978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1453491.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 2906978 is about 1704.9862169531. The cubic root of 2906978 is about 142.7186015924.

The spelling of 2906978 in words is "two million, nine hundred six thousand, nine hundred seventy-eight".