2909968 has 10 divisors (see below), whose sum is σ = 5638094. Its totient is φ = 1454976.

The previous prime is 2909957. The next prime is 2909971. The reversal of 2909968 is 8699092.

2909968 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in only one way, i.e., 2408704 + 501264 = 1552^2 + 708^2 .

It is a super-2 number, since 2×2909968² = 16935827522048, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90921 + ... + 90952.

2^2909968 is an apocalyptic number.

It is an amenable number.

2909968 is a deficient number, since it is larger than the sum of its proper divisors (2728126).

2909968 is a wasteful number, since it uses less digits than its factorization.

2909968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181881 (or 181875 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 2909968 is about 1705.8628315313. The cubic root of 2909968 is about 142.7675163528.

The spelling of 2909968 in words is "two million, nine hundred nine thousand, nine hundred sixty-eight".