28323475 has 12 divisors (see below), whose sum is σ = 35568160. Its totient is φ = 22370400.

The previous prime is 28323473. The next prime is 28323487. The reversal of 28323475 is 57432382.

It is not a de Polignac number, because 28323475 - 2¹ = 28323473 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28323475.

It is not an unprimeable number, because it can be changed into a prime (28323473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5196 + ... + 9145.

Almost surely, 2^28323475 is an apocalyptic number.

28323475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28323475 is a deficient number, since it is larger than the sum of its proper divisors (7244685).

28323475 is a wasteful number, since it uses less digits than its factorization.

28323475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14430 (or 14425 counting only the distinct ones).

The product of its digits is 40320, while the sum is 34.

The square root of 28323475 is about 5321.9803644884. The cubic root of 28323475 is about 304.8237806745.

The spelling of 28323475 in words is "twenty-eight million, three hundred twenty-three thousand, four hundred seventy-five".