265948820 has 12 divisors (see below), whose sum is σ = 558492564. Its totient is φ = 106379520.

The previous prime is 265948817. The next prime is 265948841. The reversal of 265948820 is 28849562.

It can be written as a sum of positive squares in 2 ways, for example, as 187909264 + 78039556 = 13708^2 + 8834^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6648701 + ... + 6648740.

It is an arithmetic number, because the mean of its divisors is an integer number (46541047).

Almost surely, 2^265948820 is an apocalyptic number.

265948820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265948820 is an abundant number, since it is smaller than the sum of its proper divisors (292543744).

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

265948820 is a wasteful number, since it uses less digits than its factorization.

265948820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13297450 (or 13297448 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 265948820 is about 16307.9373312507. The cubic root of 265948820 is about 643.0815095965.

The spelling of 265948820 in words is "two hundred sixty-five million, nine hundred forty-eight thousand, eight hundred twenty".