265281480 has 160 divisors (see below), whose sum is σ = 913845240. Its totient is φ = 68981760.

The previous prime is 265281479. The next prime is 265281493. The reversal of 265281480 is 84182562.

It can be written as a sum of positive squares in 4 ways, for example, as 63584676 + 201696804 = 7974^2 + 14202^2 .

It is a super-3 number, since 3×265281480³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 131842 + ... + 133838.

Almost surely, 2^265281480 is an apocalyptic number.

265281480 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 265281480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (456922620).

265281480 is an abundant number, since it is smaller than the sum of its proper divisors (648563760).

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

265281480 is a wasteful number, since it uses less digits than its factorization.

265281480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2061 (or 2048 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 265281480 is about 16287.4638909807. The cubic root of 265281480 is about 642.5431685833.

The spelling of 265281480 in words is "two hundred sixty-five million, two hundred eighty-one thousand, four hundred eighty".