2778202 has 12 divisors (see below), whose sum is σ = 4847850. Its totient is φ = 1190616.

The previous prime is 2778197. The next prime is 2778203. The reversal of 2778202 is 2028772.

It can be written as a sum of positive squares in only one way, i.e., 2752281 + 25921 = 1659^2 + 161^2 .

It is not an unprimeable number, because it can be changed into a prime (2778203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14077 + ... + 14272.

2^2778202 is an apocalyptic number.

2778202 is a deficient number, since it is larger than the sum of its proper divisors (2069648).

2778202 is a wasteful number, since it uses less digits than its factorization.

2778202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28365 (or 28358 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 2778202 is about 1666.7939284747. The cubic root of 2778202 is about 140.5792665770.

The spelling of 2778202 in words is "two million, seven hundred seventy-eight thousand, two hundred two".