28617633 has 12 divisors (see below), whose sum is σ = 45094608. Its totient is φ = 17343960.

The previous prime is 28617583. The next prime is 28617649. The reversal of 28617633 is 33671682.

It is a happy number.

28617633 is a `hidden beast` number, since 2 + 8 + 6 + 17 + 633 = 666.

It is not a de Polignac number, because 28617633 - 2⁶ = 28617569 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28617733) 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 11 ways as a sum of consecutive naturals, for example, 144435 + ... + 144632.

It is an arithmetic number, because the mean of its divisors is an integer number (3757884).

Almost surely, 2^28617633 is an apocalyptic number.

It is an amenable number.

28617633 is a deficient number, since it is larger than the sum of its proper divisors (16476975).

28617633 is a wasteful number, since it uses less digits than its factorization.

28617633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289084 (or 289081 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 28617633 is about 5349.5451208491. The cubic root of 28617633 is about 305.8754138473.

The spelling of 28617633 in words is "twenty-eight million, six hundred seventeen thousand, six hundred thirty-three".