278480558 has 8 divisors (see below), whose sum is σ = 417919080. Its totient is φ = 139174200.

The previous prime is 278480557. The next prime is 278480617. The reversal of 278480558 is 855084872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×278480558³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278480551) 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 3 ways as a sum of consecutive naturals, for example, 27593 + ... + 36308.

It is an arithmetic number, because the mean of its divisors is an integer number (52239885).

Almost surely, 2^278480558 is an apocalyptic number.

278480558 is a deficient number, since it is larger than the sum of its proper divisors (139438522).

278480558 is a wasteful number, since it uses less digits than its factorization.

278480558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66082.

The product of its (nonzero) digits is 716800, while the sum is 47.

The square root of 278480558 is about 16687.7367548748. The cubic root of 278480558 is about 653.0277351033.

The spelling of 278480558 in words is "two hundred seventy-eight million, four hundred eighty thousand, five hundred fifty-eight".