265028940 has 72 divisors (see below), whose sum is σ = 877011408. Its totient is φ = 64248960.

The previous prime is 265028923. The next prime is 265028969. The reversal of 265028940 is 49820562.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 265028895 and 265028904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64947 + ... + 68906.

It is an arithmetic number, because the mean of its divisors is an integer number (12180714).

Almost surely, 2^265028940 is an apocalyptic number.

265028940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265028940 is an abundant number, since it is smaller than the sum of its proper divisors (611982468).

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

265028940 is a wasteful number, since it uses less digits than its factorization.

265028940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133879 (or 133874 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 265028940 is about 16279.7094568669. The cubic root of 265028940 is about 642.3392099172.

The spelling of 265028940 in words is "two hundred sixty-five million, twenty-eight thousand, nine hundred forty".