7871633828 has 12 divisors (see below), whose sum is σ = 14585674572. Its totient is φ = 3704298240.

The previous prime is 7871633813. The next prime is 7871633923. The reversal of 7871633828 is 8283361787.

It can be written as a sum of positive squares in 2 ways, for example, as 5462983744 + 2408650084 = 73912^2 + 49078^2 .

It is a super-2 number, since 2×7871633828² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7871633828.

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, 57879593 + ... + 57879728.

It is an arithmetic number, because the mean of its divisors is an integer number (1215472881).

Almost surely, 2^7871633828 is an apocalyptic number.

It is an amenable number.

7871633828 is a deficient number, since it is larger than the sum of its proper divisors (6714040744).

7871633828 is a wasteful number, since it uses less digits than its factorization.

7871633828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115759342 (or 115759340 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 53.

The square root of 7871633828 is about 88722.2284886939. The cubic root of 7871633828 is about 1989.2450886072.

The spelling of 7871633828 in words is "seven billion, eight hundred seventy-one million, six hundred thirty-three thousand, eight hundred twenty-eight".