28001763 has 12 divisors (see below), whose sum is σ = 42576040. Its totient is φ = 17685216.

The previous prime is 28001759. The next prime is 28001767. The reversal of 28001763 is 36710082.

It is an interprime number because it is at equal distance from previous prime (28001759) and next prime (28001767).

It is not a de Polignac number, because 28001763 - 2² = 28001759 is a prime.

It is a super-2 number, since 2×28001763² = 1568197462216338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28001767) 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, 81706 + ... + 82047.

Almost surely, 2^28001763 is an apocalyptic number.

28001763 is a deficient number, since it is larger than the sum of its proper divisors (14574277).

28001763 is a wasteful number, since it uses less digits than its factorization.

28001763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163778 (or 163775 counting only the distinct ones).

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

The square root of 28001763 is about 5291.6692073485. The cubic root of 28001763 is about 303.6652702757.

The spelling of 28001763 in words is "twenty-eight million, one thousand, seven hundred sixty-three".