7828236 has 72 divisors (see below), whose sum is σ = 21861840. Its totient is φ = 2346624.

The previous prime is 7828217. The next prime is 7828237. The reversal of 7828236 is 6328287.

It is a happy number.

It is a super-2 number, since 2×7828236² = 122562557743392, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 7828236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7828237) by changing a digit.

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, 19930 + ... + 20318.

Almost surely, 2^7828236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7828236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10930920).

7828236 is an abundant number, since it is smaller than the sum of its proper divisors (14033604).

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

7828236 is a wasteful number, since it uses less digits than its factorization.

7828236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455 (or 450 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 7828236 is about 2797.8984970867. The cubic root of 7828236 is about 198.5582653120.

The spelling of 7828236 in words is "seven million, eight hundred twenty-eight thousand, two hundred thirty-six".