28475118 has 64 divisors (see below), whose sum is σ = 73405440. Its totient is φ = 8013600.

The previous prime is 28475099. The next prime is 28475147. The reversal of 28475118 is 81157482.

It is a super-2 number, since 2×28475118² = 1621664690227848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26308 + ... + 27368.

It is an arithmetic number, because the mean of its divisors is an integer number (1146960).

Almost surely, 2^28475118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28475118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36702720).

28475118 is an abundant number, since it is smaller than the sum of its proper divisors (44930322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28475118 is a wasteful number, since it uses less digits than its factorization.

28475118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150 (or 1144 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 28475118 is about 5336.2082043339. The cubic root of 28475118 is about 305.3668183541.

The spelling of 28475118 in words is "twenty-eight million, four hundred seventy-five thousand, one hundred eighteen".