280795086 has 320 divisors, whose sum is σ = 843042816. Its totient is φ = 68428800.

The previous prime is 280795079. The next prime is 280795087. The reversal of 280795086 is 680597082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280795087) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 9057891 + ... + 9057921.

Almost surely, 2^280795086 is an apocalyptic number.

280795086 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 280795086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (421521408).

280795086 is an abundant number, since it is smaller than the sum of its proper divisors (562247730).

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

280795086 is a wasteful number, since it uses less digits than its factorization.

280795086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 280795086 is about 16756.9414273608. The cubic root of 280795086 is about 654.8319099393.

The spelling of 280795086 in words is "two hundred eighty million, seven hundred ninety-five thousand, eighty-six".