28475448 has 64 divisors (see below), whose sum is σ = 74390400. Its totient is φ = 9072000.

The previous prime is 28475431. The next prime is 28475479. The reversal of 28475448 is 84457482.

It is a super-2 number, since 2×28475448² = 1621702277601408, which contains 22 as substring.

Its product of digits (286720) is a multiple of the sum of its prime divisors (448).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113323 + ... + 113573.

It is an arithmetic number, because the mean of its divisors is an integer number (1162350).

Almost surely, 2^28475448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28475448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37195200).

28475448 is an abundant number, since it is smaller than the sum of its proper divisors (45914952).

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

28475448 is a wasteful number, since it uses less digits than its factorization.

28475448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452 (or 448 counting only the distinct ones).

The product of its digits is 286720, while the sum is 42.

The square root of 28475448 is about 5336.2391250768. The cubic root of 28475448 is about 305.3679979882.

The spelling of 28475448 in words is "twenty-eight million, four hundred seventy-five thousand, four hundred forty-eight".