28303755 has 8 divisors (see below), whose sum is σ = 45286032. Its totient is φ = 15095328.

The previous prime is 28303753. The next prime is 28303757. The reversal of 28303755 is 55730382.

It is an interprime number because it is at equal distance from previous prime (28303753) and next prime (28303757).

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

It is not a de Polignac number, because 28303755 - 2¹ = 28303753 is a prime.

It is a super-2 number, since 2×28303755² = 1602205094200050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28303753) 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, 943444 + ... + 943473.

It is an arithmetic number, because the mean of its divisors is an integer number (5660754).

Almost surely, 2^28303755 is an apocalyptic number.

28303755 is a deficient number, since it is larger than the sum of its proper divisors (16982277).

28303755 is a wasteful number, since it uses less digits than its factorization.

28303755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886925.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 28303755 is about 5320.1273480999. The cubic root of 28303755 is about 304.7530205182.

The spelling of 28303755 in words is "twenty-eight million, three hundred three thousand, seven hundred fifty-five".