28903448 has 32 divisors (see below), whose sum is σ = 62549760. Its totient is φ = 12264480.

The previous prime is 28903429. The next prime is 28903453. The reversal of 28903448 is 84430982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3263 + ... + 8273.

It is an arithmetic number, because the mean of its divisors is an integer number (1954680).

Almost surely, 2^28903448 is an apocalyptic number.

28903448 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 28903448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31274880).

28903448 is an abundant number, since it is smaller than the sum of its proper divisors (33646312).

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

28903448 is a wasteful number, since it uses less digits than its factorization.

28903448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5127 (or 5123 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 28903448 is about 5376.1927048795. The cubic root of 28903448 is about 306.8903398656.

The spelling of 28903448 in words is "twenty-eight million, nine hundred three thousand, four hundred forty-eight".