2278011 has 8 divisors (see below), whose sum is σ = 3108160. Its totient is φ = 1483272.

The previous prime is 2278007. The next prime is 2278019. The reversal of 2278011 is 1108722.

2278011 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 not a de Polignac number, because 2278011 - 2² = 2278007 is a prime.

It is a super-2 number, since 2×2278011² = 10378668232242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2278019) 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, 8701 + ... + 8958.

It is an arithmetic number, because the mean of its divisors is an integer number (388520).

2^2278011 is an apocalyptic number.

2278011 is a deficient number, since it is larger than the sum of its proper divisors (830149).

2278011 is a wasteful number, since it uses less digits than its factorization.

2278011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17705.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 2278011 is about 1509.3081196363. The cubic root of 2278011 is about 131.5786033647.

It can be divided in two parts, 22780 and 11, that added together give a triangular number (22791 = T₂₁₃).

The spelling of 2278011 in words is "two million, two hundred seventy-eight thousand, eleven".