28469448 has 128 divisors (see below), whose sum is σ = 95232000. Its totient is φ = 7698240.

The previous prime is 28469443. The next prime is 28469449. The reversal of 28469448 is 84496482.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (28469443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28233 + ... + 29223.

It is an arithmetic number, because the mean of its divisors is an integer number (744000).

Almost surely, 2^28469448 is an apocalyptic number.

28469448 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28469448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47616000).

28469448 is an abundant number, since it is smaller than the sum of its proper divisors (66762552).

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

28469448 is a wasteful number, since it uses less digits than its factorization.

28469448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032 (or 1022 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 28469448 is about 5335.6769017623. The cubic root of 28469448 is about 305.3465486717.

The spelling of 28469448 in words is "twenty-eight million, four hundred sixty-nine thousand, four hundred forty-eight".