867881280 has 448 divisors, whose sum is σ = 3412979712. Its totient is φ = 182353920.

The previous prime is 867881257. The next prime is 867881291. The reversal of 867881280 is 82188768.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8110987 + ... + 8111093.

Almost surely, 2^867881280 is an apocalyptic number.

867881280 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 867881280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1706489856).

867881280 is an abundant number, since it is smaller than the sum of its proper divisors (2545098432).

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

867881280 is a wasteful number, since it uses less digits than its factorization.

867881280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 48.

The square root of 867881280 is about 29459.8248467298. The cubic root of 867881280 is about 953.8646925611.

The spelling of 867881280 in words is "eight hundred sixty-seven million, eight hundred eighty-one thousand, two hundred eighty".