8265840 has 160 divisors (see below), whose sum is σ = 29140992. Its totient is φ = 1920000.

The previous prime is 8265833. The next prime is 8265877. The reversal of 8265840 is 485628.

It is a super-2 number, since 2×8265840² = 136648221811200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 81790 + ... + 81890.

Almost surely, 2^8265840 is an apocalyptic number.

8265840 is a gapful number since it is divisible by the number (80) 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 8265840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14570496).

8265840 is an abundant number, since it is smaller than the sum of its proper divisors (20875152).

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

8265840 is a wasteful number, since it uses less digits than its factorization.

8265840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 8265840 is about 2875.0373910612. The cubic root of 8265840 is about 202.1912380353.

It can be divided in two parts, 826 and 5840, that added together give a palindrome (6666).

The spelling of 8265840 in words is "eight million, two hundred sixty-five thousand, eight hundred forty".