7811383828 has 12 divisors (see below), whose sum is σ = 13672975680. Its totient is φ = 3904819352.

The previous prime is 7811383817. The next prime is 7811383831. The reversal of 7811383828 is 8283831187.

It is a happy number.

It is a super-2 number, since 2×7811383828² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197788 + ... + 233971.

It is an arithmetic number, because the mean of its divisors is an integer number (1139414640).

Almost surely, 2^7811383828 is an apocalyptic number.

It is an amenable number.

7811383828 is a deficient number, since it is larger than the sum of its proper divisors (5861591852).

7811383828 is a wasteful number, since it uses less digits than its factorization.

7811383828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436286 (or 436284 counting only the distinct ones).

The product of its digits is 516096, while the sum is 49.

The square root of 7811383828 is about 88382.0334004598. The cubic root of 7811383828 is about 1984.1568137873.

The spelling of 7811383828 in words is "seven billion, eight hundred eleven million, three hundred eighty-three thousand, eight hundred twenty-eight".