2978235 has 32 divisors (see below), whose sum is σ = 5705280. Its totient is φ = 1465344.

The previous prime is 2978233. The next prime is 2978251. The reversal of 2978235 is 5328792.

It is a happy number.

It is not a de Polignac number, because 2978235 - 2¹ = 2978233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2978235.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2978233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 907 + ... + 2603.

It is an arithmetic number, because the mean of its divisors is an integer number (178290).

2^2978235 is an apocalyptic number.

2978235 is a deficient number, since it is larger than the sum of its proper divisors (2727045).

2978235 is a wasteful number, since it uses less digits than its factorization.

2978235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724 (or 1718 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 2978235 is about 1725.7563559205. The cubic root of 2978235 is about 143.8753261174.

The spelling of 2978235 in words is "two million, nine hundred seventy-eight thousand, two hundred thirty-five".