28963575 has 30 divisors (see below), whose sum is σ = 53654304. Its totient is φ = 15446160.

The previous prime is 28963573. The next prime is 28963603. The reversal of 28963575 is 57536982.

It is a happy number.

28963575 is a `hidden beast` number, since 2 + 8 + 9 + 635 + 7 + 5 = 666.

It is not a de Polignac number, because 28963575 - 2¹ = 28963573 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 28963575.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28963573) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 5127 + ... + 9176.

Almost surely, 2^28963575 is an apocalyptic number.

28963575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28963575 is a deficient number, since it is larger than the sum of its proper divisors (24690729).

28963575 is a wasteful number, since it uses less digits than its factorization.

28963575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14325 (or 14311 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 28963575 is about 5381.7817681508. The cubic root of 28963575 is about 307.1029974801.

The spelling of 28963575 in words is "twenty-eight million, nine hundred sixty-three thousand, five hundred seventy-five".