863079280 has 80 divisors (see below), whose sum is σ = 2319226560. Its totient is φ = 292571136.

The previous prime is 863079271. The next prime is 863079289. The reversal of 863079280 is 82970368.

863079280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (863079271) and next prime (863079289).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863079289) 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, 41182 + ... + 58498.

It is an arithmetic number, because the mean of its divisors is an integer number (28990332).

Almost surely, 2^863079280 is an apocalyptic number.

863079280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 863079280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1159613280).

863079280 is an abundant number, since it is smaller than the sum of its proper divisors (1456147280).

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

863079280 is a wasteful number, since it uses less digits than its factorization.

863079280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17426 (or 17420 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 863079280 is about 29378.2109734408. The cubic root of 863079280 is about 952.1021887340.

The spelling of 863079280 in words is "eight hundred sixty-three million, seventy-nine thousand, two hundred eighty".