278541078 has 16 divisors (see below), whose sum is σ = 557247600. Its totient is φ = 92819456.

The previous prime is 278541071. The next prime is 278541089. The reversal of 278541078 is 870145872.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278541071) 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, 31126 + ... + 39062.

It is an arithmetic number, because the mean of its divisors is an integer number (34827975).

Almost surely, 2^278541078 is an apocalyptic number.

278541078 is an abundant number, since it is smaller than the sum of its proper divisors (278706522).

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

278541078 is a wasteful number, since it uses less digits than its factorization.

278541078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13791.

The product of its (nonzero) digits is 125440, while the sum is 42.

The square root of 278541078 is about 16689.5499639745. The cubic root of 278541078 is about 653.0750374790.

The spelling of 278541078 in words is "two hundred seventy-eight million, five hundred forty-one thousand, seventy-eight".