2978117 has 8 divisors (see below), whose sum is σ = 3212160. Its totient is φ = 2751840.

The previous prime is 2978113. The next prime is 2978119. The reversal of 2978117 is 7118792.

2978117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2978117 - 2² = 2978113 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2978113) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1133 + ... + 2690.

It is an arithmetic number, because the mean of its divisors is an integer number (401520).

2^2978117 is an apocalyptic number.

It is an amenable number.

2978117 is a deficient number, since it is larger than the sum of its proper divisors (234043).

2978117 is a wasteful number, since it uses less digits than its factorization.

2978117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3883.

The product of its digits is 7056, while the sum is 35.

The square root of 2978117 is about 1725.7221676736. The cubic root of 2978117 is about 143.8734259413.

The spelling of 2978117 in words is "two million, nine hundred seventy-eight thousand, one hundred seventeen".