2917930 has 16 divisors (see below), whose sum is σ = 5302440. Its totient is φ = 1156032.

The previous prime is 2917927. The next prime is 2917939. The reversal of 2917930 is 397192.

It can be written as a sum of positive squares in 4 ways, for example, as 1745041 + 1172889 = 1321^2 + 1083^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2917892 and 2917901.

It is not an unprimeable number, because it can be changed into a prime (2917939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249 + ... + 2428.

2^2917930 is an apocalyptic number.

2917930 is a deficient number, since it is larger than the sum of its proper divisors (2384510).

2917930 is a wasteful number, since it uses less digits than its factorization.

2917930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2793.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 2917930 is about 1708.1949537450. The cubic root of 2917930 is about 142.8976071089.

The spelling of 2917930 in words is "two million, nine hundred seventeen thousand, nine hundred thirty".