2278306028 has 24 divisors (see below), whose sum is σ = 4041596832. Its totient is φ = 1123651584.

The previous prime is 2278306021. The next prime is 2278306067. The reversal of 2278306028 is 8206038722.

It is a super-2 number, since 2×2278306028² = 10381356714442273568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2278305982 and 2278306000.

It is not an unprimeable number, because it can be changed into a prime (2278306021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95126 + ... + 116642.

It is an arithmetic number, because the mean of its divisors is an integer number (168399868).

Almost surely, 2^2278306028 is an apocalyptic number.

It is an amenable number.

2278306028 is a deficient number, since it is larger than the sum of its proper divisors (1763290804).

2278306028 is a wasteful number, since it uses less digits than its factorization.

2278306028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21881 (or 21879 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 2278306028 is about 47731.6040794776. The cubic root of 2278306028 is about 1315.8428342164.

The spelling of 2278306028 in words is "two billion, two hundred seventy-eight million, three hundred six thousand, twenty-eight".