265443420 has 96 divisors (see below), whose sum is σ = 813415680. Its totient is φ = 64143360.

The previous prime is 265443413. The next prime is 265443461. The reversal of 265443420 is 24344562.

265443420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 344796 + ... + 345564.

It is an arithmetic number, because the mean of its divisors is an integer number (8473080).

Almost surely, 2^265443420 is an apocalyptic number.

265443420 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 265443420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406707840).

265443420 is an abundant number, since it is smaller than the sum of its proper divisors (547972260).

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

265443420 is a wasteful number, since it uses less digits than its factorization.

265443420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315 (or 1313 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 265443420 is about 16292.4344405617. The cubic root of 265443420 is about 642.6738879421.

Adding to 265443420 its reverse (24344562), we get a palindrome (289787982).

The spelling of 265443420 in words is "two hundred sixty-five million, four hundred forty-three thousand, four hundred twenty".