28071763 has 4 divisors (see below), whose sum is σ = 28155400. Its totient is φ = 27988128.

The previous prime is 28071761. The next prime is 28071809. The reversal of 28071763 is 36717082.

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

It is a cyclic number.

It is not a de Polignac number, because 28071763 - 2¹ = 28071761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28071761) 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, 41313 + ... + 41986.

It is an arithmetic number, because the mean of its divisors is an integer number (7038850).

Almost surely, 2^28071763 is an apocalyptic number.

28071763 is a deficient number, since it is larger than the sum of its proper divisors (83637).

28071763 is an equidigital number, since it uses as much as digits as its factorization.

28071763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83636.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 28071763 is about 5298.2792489638. The cubic root of 28071763 is about 303.9180981754.

The spelling of 28071763 in words is "twenty-eight million, seventy-one thousand, seven hundred sixty-three".