28750073 has 8 divisors (see below), whose sum is σ = 32211840. Its totient is φ = 25429680.

The previous prime is 28750067. The next prime is 28750087. The reversal of 28750073 is 37005782.

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 28750073 - 2¹⁸ = 28487929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28750573) 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, 34913 + ... + 35726.

It is an arithmetic number, because the mean of its divisors is an integer number (4026480).

Almost surely, 2^28750073 is an apocalyptic number.

It is an amenable number.

28750073 is a deficient number, since it is larger than the sum of its proper divisors (3461767).

28750073 is a wasteful number, since it uses less digits than its factorization.

28750073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70687.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 28750073 is about 5361.9094546626. The cubic root of 28750073 is about 306.3465430456.

The spelling of 28750073 in words is "twenty-eight million, seven hundred fifty thousand, seventy-three".