2117078 has 16 divisors (see below), whose sum is σ = 3413664. Its totient is φ = 981120.

The previous prime is 2117077. The next prime is 2117099. The reversal of 2117078 is 8707112.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117077) 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, 1976 + ... + 2852.

It is an arithmetic number, because the mean of its divisors is an integer number (213354).

2^2117078 is an apocalyptic number.

2117078 is a deficient number, since it is larger than the sum of its proper divisors (1296586).

2117078 is a wasteful number, since it uses less digits than its factorization.

2117078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967.

The product of its (nonzero) digits is 784, while the sum is 26.

The square root of 2117078 is about 1455.0182129444. The cubic root of 2117078 is about 128.4041182933.

The spelling of 2117078 in words is "two million, one hundred seventeen thousand, seventy-eight".