28313475 has 12 divisors (see below), whose sum is σ = 46811736. Its totient is φ = 15100480.

The previous prime is 28313443. The next prime is 28313503. The reversal of 28313475 is 57431382.

It is not a de Polignac number, because 28313475 - 2⁵ = 28313443 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188682 + ... + 188831.

It is an arithmetic number, because the mean of its divisors is an integer number (3900978).

Almost surely, 2^28313475 is an apocalyptic number.

28313475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28313475 is a deficient number, since it is larger than the sum of its proper divisors (18498261).

28313475 is a wasteful number, since it uses less digits than its factorization.

28313475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377526 (or 377521 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 28313475 is about 5321.0407816516. The cubic root of 28313475 is about 304.7879023484.

The spelling of 28313475 in words is "twenty-eight million, three hundred thirteen thousand, four hundred seventy-five".