28263077 has 4 divisors (see below), whose sum is σ = 28603680. Its totient is φ = 27922476.

The previous prime is 28263071. The next prime is 28263091. The reversal of 28263077 is 77036282.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28263077 - 2¹⁰ = 28262053 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 (28263071) 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 3 ways as a sum of consecutive naturals, for example, 170177 + ... + 170342.

It is an arithmetic number, because the mean of its divisors is an integer number (7150920).

Almost surely, 2^28263077 is an apocalyptic number.

It is an amenable number.

28263077 is a deficient number, since it is larger than the sum of its proper divisors (340603).

28263077 is an equidigital number, since it uses as much as digits as its factorization.

28263077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340602.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 28263077 is about 5316.3029447164. The cubic root of 28263077 is about 304.6069540692.

The spelling of 28263077 in words is "twenty-eight million, two hundred sixty-three thousand, seventy-seven".