2778460 has 12 divisors (see below), whose sum is σ = 5834808. Its totient is φ = 1111376.

The previous prime is 2778439. The next prime is 2778467. The reversal of 2778460 is 648772.

2778460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778467) 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 3 ways as a sum of consecutive naturals, for example, 69442 + ... + 69481.

It is an arithmetic number, because the mean of its divisors is an integer number (486234).

2^2778460 is an apocalyptic number.

2778460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2778460 is an abundant number, since it is smaller than the sum of its proper divisors (3056348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2778460 is a wasteful number, since it uses less digits than its factorization.

2778460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138932 (or 138930 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 2778460 is about 1666.8713207683. The cubic root of 2778460 is about 140.5836181118.

It can be divided in two parts, 27 and 78460, that added together give a palindrome (78487).

The spelling of 2778460 in words is "two million, seven hundred seventy-eight thousand, four hundred sixty".