2802278 has 4 divisors (see below), whose sum is σ = 4203420. Its totient is φ = 1401138.

The previous prime is 2802277. The next prime is 2802301. The reversal of 2802278 is 8722082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8722082 = 2 ⋅4361041.

It is a self number, because there is not a number n which added to its sum of digits gives 2802278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2802277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700568 + ... + 700571.

It is an arithmetic number, because the mean of its divisors is an integer number (1050855).

2^2802278 is an apocalyptic number.

2802278 is a deficient number, since it is larger than the sum of its proper divisors (1401142).

2802278 is a wasteful number, since it uses less digits than its factorization.

2802278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401141.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 2802278 is about 1674.0005973715. Note that the first 3 decimals coincide. The cubic root of 2802278 is about 140.9841874862.

The spelling of 2802278 in words is "two million, eight hundred two thousand, two hundred seventy-eight".