2176157828 has 24 divisors (see below), whose sum is σ = 4342470552. Its totient is φ = 945298944.

The previous prime is 2176157821. The next prime is 2176157873. The reversal of 2176157828 is 8287516712.

It can be written as a sum of positive squares in 4 ways, for example, as 11303044 + 2164854784 = 3362^2 + 46528^2 .

It is not an unprimeable number, because it can be changed into a prime (2176157821) 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 7 ways as a sum of consecutive naturals, for example, 1229975 + ... + 1231742.

It is an arithmetic number, because the mean of its divisors is an integer number (180936273).

Almost surely, 2^2176157828 is an apocalyptic number.

It is an amenable number.

2176157828 is a deficient number, since it is larger than the sum of its proper divisors (2166312724).

2176157828 is a wasteful number, since it uses less digits than its factorization.

2176157828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461751 (or 2461749 counting only the distinct ones).

The product of its digits is 376320, while the sum is 47.

The square root of 2176157828 is about 46649.3068330066. The cubic root of 2176157828 is about 1295.8760494994.

The spelling of 2176157828 in words is "two billion, one hundred seventy-six million, one hundred fifty-seven thousand, eight hundred twenty-eight".