265798020 has 48 divisors (see below), whose sum is σ = 744968448. Its totient is φ = 70809600.

The previous prime is 265798003. The next prime is 265798033. The reversal of 265798020 is 20897562.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 265798020.

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, 94677 + ... + 97443.

It is an arithmetic number, because the mean of its divisors is an integer number (15520176).

Almost surely, 2^265798020 is an apocalyptic number.

265798020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265798020 is an abundant number, since it is smaller than the sum of its proper divisors (479170428).

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

265798020 is a wasteful number, since it uses less digits than its factorization.

265798020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4380 (or 4378 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 265798020 is about 16303.3131602138. The cubic root of 265798020 is about 642.9599385528.

The spelling of 265798020 in words is "two hundred sixty-five million, seven hundred ninety-eight thousand, twenty".