265678080 has 144 divisors (see below), whose sum is σ = 868781760. Its totient is φ = 69156864.

The previous prime is 265678051. The next prime is 265678099. The reversal of 265678080 is 80876562.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164316 + ... + 165924.

Almost surely, 2^265678080 is an apocalyptic number.

265678080 is a gapful number since it is divisible by the number (20) 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 265678080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (434390880).

265678080 is an abundant number, since it is smaller than the sum of its proper divisors (603103680).

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

265678080 is a wasteful number, since it uses less digits than its factorization.

265678080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676 (or 1662 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 265678080 is about 16299.6343517270. The cubic root of 265678080 is about 642.8632132055.

The spelling of 265678080 in words is "two hundred sixty-five million, six hundred seventy-eight thousand, eighty".