28171167 has 16 divisors (see below), whose sum is σ = 40101120. Its totient is φ = 17539200.

The previous prime is 28171153. The next prime is 28171181. The reversal of 28171167 is 76117182.

It is an interprime number because it is at equal distance from previous prime (28171153) and next prime (28171181).

It is not a de Polignac number, because 28171167 - 2¹² = 28167071 is a prime.

It is a super-2 number, since 2×28171167² = 1587229300283778, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28171667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 567 + ... + 7527.

It is an arithmetic number, because the mean of its divisors is an integer number (2506320).

Almost surely, 2^28171167 is an apocalyptic number.

28171167 is a deficient number, since it is larger than the sum of its proper divisors (11929953).

28171167 is a wasteful number, since it uses less digits than its factorization.

28171167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7054.

The product of its digits is 4704, while the sum is 33.

The square root of 28171167 is about 5307.6517406476. The cubic root of 28171167 is about 304.2764070482.

The spelling of 28171167 in words is "twenty-eight million, one hundred seventy-one thousand, one hundred sixty-seven".