2978135 has 4 divisors (see below), whose sum is σ = 3573768. Its totient is φ = 2382504.

The previous prime is 2978119. The next prime is 2978147. The reversal of 2978135 is 5318792.

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

It is a cyclic number.

It is not a de Polignac number, because 2978135 - 2⁴ = 2978119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2978095 and 2978104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297809 + ... + 297818.

It is an arithmetic number, because the mean of its divisors is an integer number (893442).

2^2978135 is an apocalyptic number.

2978135 is a deficient number, since it is larger than the sum of its proper divisors (595633).

2978135 is an equidigital number, since it uses as much as digits as its factorization.

2978135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595632.

The product of its digits is 15120, while the sum is 35.

The square root of 2978135 is about 1725.7273828737. The cubic root of 2978135 is about 143.8737158020.

It can be divided in two parts, 2978 and 135, that added together give a palindrome (3113).

The spelling of 2978135 in words is "two million, nine hundred seventy-eight thousand, one hundred thirty-five".