28418475 has 48 divisors (see below), whose sum is σ = 51425280. Its totient is φ = 13785600.

The previous prime is 28418473. The next prime is 28418491. The reversal of 28418475 is 57481482.

It is a happy number.

It is not a de Polignac number, because 28418475 - 2¹ = 28418473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28418473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39166 + ... + 39884.

It is an arithmetic number, because the mean of its divisors is an integer number (1071360).

Almost surely, 2^28418475 is an apocalyptic number.

28418475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28418475 is a deficient number, since it is larger than the sum of its proper divisors (23006805).

28418475 is a wasteful number, since it uses less digits than its factorization.

28418475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780 (or 775 counting only the distinct ones).

The product of its digits is 71680, while the sum is 39.

The square root of 28418475 is about 5330.8981419644. The cubic root of 28418475 is about 305.1642043335.

The spelling of 28418475 in words is "twenty-eight million, four hundred eighteen thousand, four hundred seventy-five".