280531060878 has 32 divisors (see below), whose sum is σ = 562190803200. Its totient is φ = 93322349120.

The previous prime is 280531060871. The next prime is 280531060883. The reversal of 280531060878 is 878060135082.

It is a super-2 number, since 2×280531060878² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280531060871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12017458 + ... + 12040778.

It is an arithmetic number, because the mean of its divisors is an integer number (17568462600).

Almost surely, 2^280531060878 is an apocalyptic number.

280531060878 is an abundant number, since it is smaller than the sum of its proper divisors (281659742322).

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

280531060878 is a wasteful number, since it uses less digits than its factorization.

280531060878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27272.

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 280531060878 in words is "two hundred eighty billion, five hundred thirty-one million, sixty thousand, eight hundred seventy-eight".