28693533 has 8 divisors (see below), whose sum is σ = 41736096. Its totient is φ = 17390000.

The previous prime is 28693517. The next prime is 28693571. The reversal of 28693533 is 33539682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28693533 - 2⁴ = 28693517 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28693491 and 28693500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28693573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434718 + ... + 434783.

It is an arithmetic number, because the mean of its divisors is an integer number (5217012).

Almost surely, 2^28693533 is an apocalyptic number.

It is an amenable number.

28693533 is a deficient number, since it is larger than the sum of its proper divisors (13042563).

28693533 is a wasteful number, since it uses less digits than its factorization.

28693533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869515.

The product of its digits is 116640, while the sum is 39.

The square root of 28693533 is about 5356.6344844501. The cubic root of 28693533 is about 306.1455905081.

The spelling of 28693533 in words is "twenty-eight million, six hundred ninety-three thousand, five hundred thirty-three".