28406167 has 16 divisors (see below), whose sum is σ = 31397760. Its totient is φ = 25579008.

The previous prime is 28406143. The next prime is 28406207. The reversal of 28406167 is 76160482.

It is a cyclic number.

It is not a de Polignac number, because 28406167 - 2¹¹ = 28404119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28406107) 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, 77218 + ... + 77584.

It is an arithmetic number, because the mean of its divisors is an integer number (1962360).

Almost surely, 2^28406167 is an apocalyptic number.

28406167 is a deficient number, since it is larger than the sum of its proper divisors (2991593).

28406167 is a wasteful number, since it uses less digits than its factorization.

28406167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 28406167 is about 5329.7436148468. The cubic root of 28406167 is about 305.1201425815.

The spelling of 28406167 in words is "twenty-eight million, four hundred six thousand, one hundred sixty-seven".