7685028 has 36 divisors (see below), whose sum is σ = 20921628. Its totient is φ = 2364480.

The previous prime is 7685023. The next prime is 7685033. The reversal of 7685028 is 8205867.

It is an interprime number because it is at equal distance from previous prime (7685023) and next prime (7685033).

It can be written as a sum of positive squares in 2 ways, for example, as 459684 + 7225344 = 678^2 + 2688^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 = 7684983 and 7685001.

It is not an unprimeable number, because it can be changed into a prime (7685021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7743 + ... + 8678.

Almost surely, 2^7685028 is an apocalyptic number.

7685028 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

7685028 is an abundant number, since it is smaller than the sum of its proper divisors (13236600).

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

7685028 is a wasteful number, since it uses less digits than its factorization.

7685028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16444 (or 16439 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 7685028 is about 2772.1883052924. The cubic root of 7685028 is about 197.3400125063.

It can be divided in two parts, 7 and 685028, that added together give a triangular number (685035 = T₁₁₇₀).

The spelling of 7685028 in words is "seven million, six hundred eighty-five thousand, twenty-eight".