1672166828 has 12 divisors (see below), whose sum is σ = 2927212680. Its totient is φ = 835820352.

The previous prime is 1672166827. The next prime is 1672166857. The reversal of 1672166828 is 8286612761.

It is a super-2 number, since 2×1672166828² = 5592283801327163168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1672166827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51101 + ... + 77172.

It is an arithmetic number, because the mean of its divisors is an integer number (243934390).

Almost surely, 2^1672166828 is an apocalyptic number.

It is an amenable number.

1672166828 is a deficient number, since it is larger than the sum of its proper divisors (1255045852).

1672166828 is a wasteful number, since it uses less digits than its factorization.

1672166828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131536 (or 131534 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 1672166828 is about 40892.1365056902. The cubic root of 1672166828 is about 1186.9339018915.

The spelling of 1672166828 in words is "one billion, six hundred seventy-two million, one hundred sixty-six thousand, eight hundred twenty-eight".