28963375 has 32 divisors (see below), whose sum is σ = 41932800. Its totient is φ = 19562400.

The previous prime is 28963367. The next prime is 28963379. The reversal of 28963375 is 57336982.

It is not a de Polignac number, because 28963375 - 2³ = 28963367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28963379) 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, 68916 + ... + 69334.

It is an arithmetic number, because the mean of its divisors is an integer number (1310400).

Almost surely, 2^28963375 is an apocalyptic number.

28963375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28963375 is a deficient number, since it is larger than the sum of its proper divisors (12969425).

28963375 is an equidigital number, since it uses as much as digits as its factorization.

28963375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 510 counting only the distinct ones).

The product of its digits is 272160, while the sum is 43.

The square root of 28963375 is about 5381.7631869119. The cubic root of 28963375 is about 307.1022906067.

The spelling of 28963375 in words is "twenty-eight million, nine hundred sixty-three thousand, three hundred seventy-five".