28134077 has 4 divisors (see below), whose sum is σ = 28820316. Its totient is φ = 27447840.

The previous prime is 28134053. The next prime is 28134101. The reversal of 28134077 is 77043182.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (28134053) and next prime (28134101).

It can be written as a sum of positive squares in 2 ways, for example, as 8826841 + 19307236 = 2971^2 + 4394^2 .

It is a cyclic number.

It is not a de Polignac number, because 28134077 - 2⁶ = 28134013 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 (28134377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343058 + ... + 343139.

It is an arithmetic number, because the mean of its divisors is an integer number (7205079).

Almost surely, 2^28134077 is an apocalyptic number.

It is an amenable number.

28134077 is a deficient number, since it is larger than the sum of its proper divisors (686239).

28134077 is an equidigital number, since it uses as much as digits as its factorization.

28134077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686238.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 28134077 is about 5304.1565776285. The cubic root of 28134077 is about 304.1428121990.

The spelling of 28134077 in words is "twenty-eight million, one hundred thirty-four thousand, seventy-seven".