278098002 has 128 divisors (see below), whose sum is σ = 805593600. Its totient is φ = 69009408.

The previous prime is 278097973. The next prime is 278098021. The reversal of 278098002 is 200890872.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 81874 + ... + 85202.

It is an arithmetic number, because the mean of its divisors is an integer number (6293700).

Almost surely, 2^278098002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 278098002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402796800).

278098002 is an abundant number, since it is smaller than the sum of its proper divisors (527495598).

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

278098002 is a wasteful number, since it uses less digits than its factorization.

278098002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3377 (or 3371 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 278098002 is about 16676.2706262521. The cubic root of 278098002 is about 652.7285709989.

The spelling of 278098002 in words is "two hundred seventy-eight million, ninety-eight thousand, two".