916001280 has 240 divisors, whose sum is σ = 3217294080. Its totient is φ = 240820224.

The previous prime is 916001269. The next prime is 916001291. The reversal of 916001280 is 82100619.

It is an interprime number because it is at equal distance from previous prime (916001269) and next prime (916001291).

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1912081 + ... + 1912559.

It is an arithmetic number, because the mean of its divisors is an integer number (13405392).

Almost surely, 2^916001280 is an apocalyptic number.

916001280 is a gapful number since it is divisible by the number (90) 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 916001280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1608647040).

916001280 is an abundant number, since it is smaller than the sum of its proper divisors (2301292800).

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

916001280 is a wasteful number, since it uses less digits than its factorization.

916001280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591 (or 572 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 916001280 is about 30265.5130470309. The cubic root of 916001280 is about 971.1776817896.

Adding to 916001280 its reverse (82100619), we get a palindrome (998101899).

The spelling of 916001280 in words is "nine hundred sixteen million, one thousand, two hundred eighty".