28858383 has 32 divisors (see below), whose sum is σ = 44352000. Its totient is φ = 18532800.

The previous prime is 28858363. The next prime is 28858387. The reversal of 28858383 is 38385882.

It is a Cunningham number, because it is equal to 5372²-1.

It is not a de Polignac number, because 28858383 - 2¹⁰ = 28857359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28858387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144918 + ... + 145116.

It is an arithmetic number, because the mean of its divisors is an integer number (1386000).

Almost surely, 2^28858383 is an apocalyptic number.

28858383 is a deficient number, since it is larger than the sum of its proper divisors (15493617).

28858383 is a wasteful number, since it uses less digits than its factorization.

28858383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 374 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 28858383 is about 5371.9999069248. Note that the first 4 decimals coincide. The cubic root of 28858383 is about 306.7307602067.

It can be divided in two parts, 28858 and 383, that added together give a square (29241 = 171²).

The spelling of 28858383 in words is "twenty-eight million, eight hundred fifty-eight thousand, three hundred eighty-three".