278871102 has 48 divisors (see below), whose sum is σ = 632586240. Its totient is φ = 88678800.

The previous prime is 278871101. The next prime is 278871127. The reversal of 278871102 is 201178872.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278871101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36099 + ... + 43137.

It is an arithmetic number, because the mean of its divisors is an integer number (13178880).

Almost surely, 2^278871102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 278871102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316293120).

278871102 is an abundant number, since it is smaller than the sum of its proper divisors (353715138).

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

278871102 is a wasteful number, since it uses less digits than its factorization.

278871102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7149 (or 7146 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The square root of 278871102 is about 16699.4341820314. The cubic root of 278871102 is about 653.3328634478.

The spelling of 278871102 in words is "two hundred seventy-eight million, eight hundred seventy-one thousand, one hundred two".