265197984 has 24 divisors (see below), whose sum is σ = 696144960. Its totient is φ = 88399296.

The previous prime is 265197983. The next prime is 265197997. The reversal of 265197984 is 489791562.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (265197983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1381144 + ... + 1381335.

It is an arithmetic number, because the mean of its divisors is an integer number (29006040).

Almost surely, 2^265197984 is an apocalyptic number.

265197984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

265197984 is an abundant number, since it is smaller than the sum of its proper divisors (430946976).

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

265197984 is a wasteful number, since it uses less digits than its factorization.

265197984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2762492 (or 2762484 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 51.

The square root of 265197984 is about 16284.9004909456. The cubic root of 265197984 is about 642.4757491086.

The spelling of 265197984 in words is "two hundred sixty-five million, one hundred ninety-seven thousand, nine hundred eighty-four".