28763933 has 8 divisors (see below), whose sum is σ = 31422816. Its totient is φ = 26112400.

The previous prime is 28763927. The next prime is 28763941. The reversal of 28763933 is 33936782.

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 28763933 - 2¹² = 28759837 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 (28763233) 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, 9335 + ... + 12027.

It is an arithmetic number, because the mean of its divisors is an integer number (3927852).

Almost surely, 2^28763933 is an apocalyptic number.

It is an amenable number.

28763933 is a deficient number, since it is larger than the sum of its proper divisors (2658883).

28763933 is a wasteful number, since it uses less digits than its factorization.

28763933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3675.

The product of its digits is 163296, while the sum is 41.

The square root of 28763933 is about 5363.2017489556. The cubic root of 28763933 is about 306.3957635695.

The spelling of 28763933 in words is "twenty-eight million, seven hundred sixty-three thousand, nine hundred thirty-three".