28030761 has 12 divisors (see below), whose sum is σ = 44169840. Its totient is φ = 16988280.

The previous prime is 28030747. The next prime is 28030763. The reversal of 28030761 is 16703082.

It is not a de Polignac number, because 28030761 - 2⁶ = 28030697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28030763) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141471 + ... + 141668.

It is an arithmetic number, because the mean of its divisors is an integer number (3680820).

Almost surely, 2^28030761 is an apocalyptic number.

It is an amenable number.

28030761 is a deficient number, since it is larger than the sum of its proper divisors (16139079).

28030761 is a wasteful number, since it uses less digits than its factorization.

28030761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283156 (or 283153 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 28030761 is about 5294.4084655417. The cubic root of 28030761 is about 303.7700571016.

The spelling of 28030761 in words is "twenty-eight million, thirty thousand, seven hundred sixty-one".