28375633 has 32 divisors (see below), whose sum is σ = 35546112. Its totient is φ = 22291200.

The previous prime is 28375631. The next prime is 28375663. The reversal of 28375633 is 33657382.

It is a cyclic number.

It is not a de Polignac number, because 28375633 - 2¹ = 28375631 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28375592 and 28375601.

It is not an unprimeable number, because it can be changed into a prime (28375631) 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 31 ways as a sum of consecutive naturals, for example, 163935 + ... + 164107.

It is an arithmetic number, because the mean of its divisors is an integer number (1110816).

Almost surely, 2^28375633 is an apocalyptic number.

It is an amenable number.

28375633 is a deficient number, since it is larger than the sum of its proper divisors (7170479).

28375633 is a wasteful number, since it uses less digits than its factorization.

28375633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265.

The product of its digits is 90720, while the sum is 37.

The square root of 28375633 is about 5326.8783541583. The cubic root of 28375633 is about 305.0107780837.

The spelling of 28375633 in words is "twenty-eight million, three hundred seventy-five thousand, six hundred thirty-three".