278083130 has 32 divisors (see below), whose sum is σ = 540440208. Its totient is φ = 102412800.

The previous prime is 278083121. The next prime is 278083139. The reversal of 278083130 is 31380872.

It is an interprime number because it is at equal distance from previous prime (278083121) and next prime (278083139).

It can be written as a sum of positive squares in 8 ways, for example, as 494209 + 277588921 = 703^2 + 16661^2 .

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (278083139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52190 + ... + 57270.

Almost surely, 2^278083130 is an apocalyptic number.

278083130 is a deficient number, since it is larger than the sum of its proper divisors (262357078).

278083130 is a wasteful number, since it uses less digits than its factorization.

278083130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5522.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 278083130 is about 16675.8247172366. The cubic root of 278083130 is about 652.7169353497.

The spelling of 278083130 in words is "two hundred seventy-eight million, eighty-three thousand, one hundred thirty".