28980171 has 24 divisors (see below), whose sum is σ = 45926400. Its totient is φ = 17463600.

The previous prime is 28980169. The next prime is 28980173. The reversal of 28980171 is 17108982.

It is an interprime number because it is at equal distance from previous prime (28980169) and next prime (28980173).

It is not a de Polignac number, because 28980171 - 2¹ = 28980169 is a prime.

It is a super-2 number, since 2×28980171² = 1679700622378482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28980173) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18966 + ... + 20436.

It is an arithmetic number, because the mean of its divisors is an integer number (1913600).

Almost surely, 2^28980171 is an apocalyptic number.

28980171 is a deficient number, since it is larger than the sum of its proper divisors (16946229).

28980171 is a wasteful number, since it uses less digits than its factorization.

28980171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687 (or 1684 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 28980171 is about 5383.3234158835. The cubic root of 28980171 is about 307.1616424988.

The spelling of 28980171 in words is "twenty-eight million, nine hundred eighty thousand, one hundred seventy-one".