7636857828 has 12 divisors (see below), whose sum is σ = 17819334960. Its totient is φ = 2545619272.

The previous prime is 7636857817. The next prime is 7636857841. The reversal of 7636857828 is 8287586367.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318202398 + ... + 318202421.

It is an arithmetic number, because the mean of its divisors is an integer number (1484944580).

Almost surely, 2^7636857828 is an apocalyptic number.

It is an amenable number.

7636857828 is an abundant number, since it is smaller than the sum of its proper divisors (10182477132).

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

7636857828 is a wasteful number, since it uses less digits than its factorization.

7636857828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636404826 (or 636404824 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 60.

The square root of 7636857828 is about 87389.1173316220. The cubic root of 7636857828 is about 1969.2683539672.

The spelling of 7636857828 in words is "seven billion, six hundred thirty-six million, eight hundred fifty-seven thousand, eight hundred twenty-eight".