166836128 has 12 divisors (see below), whose sum is σ = 328458690. Its totient is φ = 83418048.

The previous prime is 166836127. The next prime is 166836151. The reversal of 166836128 is 821638661.

It can be written as a sum of positive squares in only one way, i.e., 95804944 + 71031184 = 9788^2 + 8428^2 .

It is not an unprimeable number, because it can be changed into a prime (166836121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2606783 + ... + 2606846.

Almost surely, 2^166836128 is an apocalyptic number.

It is an amenable number.

166836128 is a deficient number, since it is larger than the sum of its proper divisors (161622562).

166836128 is an equidigital number, since it uses as much as digits as its factorization.

166836128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5213639 (or 5213631 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 166836128 is about 12916.5060291086. The cubic root of 166836128 is about 550.5076613016.

The spelling of 166836128 in words is "one hundred sixty-six million, eight hundred thirty-six thousand, one hundred twenty-eight".