265800120 has 64 divisors (see below), whose sum is σ = 839376000. Its totient is φ = 67148928.

The previous prime is 265800053. The next prime is 265800127. The reversal of 265800120 is 21008562.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265800127) 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, 56010 + ... + 60569.

It is an arithmetic number, because the mean of its divisors is an integer number (13115250).

Almost surely, 2^265800120 is an apocalyptic number.

265800120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265800120 is an abundant number, since it is smaller than the sum of its proper divisors (573575880).

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

265800120 is a wasteful number, since it uses less digits than its factorization.

265800120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116612 (or 116608 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 265800120 is about 16303.3775641736. The cubic root of 265800120 is about 642.9616318340.

Adding to 265800120 its reverse (21008562), we get a palindrome (286808682).

The spelling of 265800120 in words is "two hundred sixty-five million, eight hundred thousand, one hundred twenty".