28164707 has 8 divisors (see below), whose sum is σ = 29702400. Its totient is φ = 26632584.

The previous prime is 28164691. The next prime is 28164749. The reversal of 28164707 is 70746182.

It is a happy number.

28164707 is nontrivially palindromic in base 15.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28164707 - 2⁴ = 28164691 is a prime.

It is a super-3 number, since 3×28164707³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28164757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12794 + ... + 14832.

It is an arithmetic number, because the mean of its divisors is an integer number (3712800).

Almost surely, 2^28164707 is an apocalyptic number.

28164707 is a deficient number, since it is larger than the sum of its proper divisors (1537693).

28164707 is a wasteful number, since it uses less digits than its factorization.

28164707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 28164707 is about 5307.0431503804. The cubic root of 28164707 is about 304.2531471450.

The spelling of 28164707 in words is "twenty-eight million, one hundred sixty-four thousand, seven hundred seven".