28051383 has 4 divisors (see below), whose sum is σ = 37401848. Its totient is φ = 18700920.

The previous prime is 28051369. The next prime is 28051403. The reversal of 28051383 is 38315082.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 28051383 - 2¹⁰ = 28050359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28051383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28050383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4675228 + ... + 4675233.

It is an arithmetic number, because the mean of its divisors is an integer number (9350462).

Almost surely, 2^28051383 is an apocalyptic number.

28051383 is a deficient number, since it is larger than the sum of its proper divisors (9350465).

28051383 is an equidigital number, since it uses as much as digits as its factorization.

28051383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9350464.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 28051383 is about 5296.3556338297. The cubic root of 28051383 is about 303.8445325506.

The spelling of 28051383 in words is "twenty-eight million, fifty-one thousand, three hundred eighty-three".