28156067 has 2 divisors, whose sum is σ = 28156068. Its totient is φ = 28156066.

The previous prime is 28156061. The next prime is 28156123. The reversal of 28156067 is 76065182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28156067 - 2⁸ = 28155811 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28156061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14078033 + 14078034.

It is an arithmetic number, because the mean of its divisors is an integer number (14078034).

Almost surely, 2^28156067 is an apocalyptic number.

28156067 is a deficient number, since it is larger than the sum of its proper divisors (1).

28156067 is an equidigital number, since it uses as much as digits as its factorization.

28156067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 28156067 is about 5306.2290753415. The cubic root of 28156067 is about 304.2220323643. Note that the first 3 decimals are identical.

The spelling of 28156067 in words is "twenty-eight million, one hundred fifty-six thousand, sixty-seven".