28496663 has 4 divisors (see below), whose sum is σ = 30688728. Its totient is φ = 26304600.

The previous prime is 28496651. The next prime is 28496693. The reversal of 28496663 is 36669482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36669482 = 2 ⋅18334741.

It is a cyclic number.

It is not a de Polignac number, because 28496663 - 2⁸ = 28496407 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 (28496603) 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, 1096013 + ... + 1096038.

It is an arithmetic number, because the mean of its divisors is an integer number (7672182).

Almost surely, 2^28496663 is an apocalyptic number.

28496663 is a deficient number, since it is larger than the sum of its proper divisors (2192065).

28496663 is a wasteful number, since it uses less digits than its factorization.

28496663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192064.

The product of its digits is 373248, while the sum is 44.

The square root of 28496663 is about 5338.2265781812. The cubic root of 28496663 is about 305.4438150439.

The spelling of 28496663 in words is "twenty-eight million, four hundred ninety-six thousand, six hundred sixty-three".