28448925 has 12 divisors (see below), whose sum is σ = 47035680. Its totient is φ = 15172720.

The previous prime is 28448921. The next prime is 28448977. The reversal of 28448925 is 52984482.

It is not a de Polignac number, because 28448925 - 2² = 28448921 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28448921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189585 + ... + 189734.

It is an arithmetic number, because the mean of its divisors is an integer number (3919640).

Almost surely, 2^28448925 is an apocalyptic number.

28448925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28448925 is a deficient number, since it is larger than the sum of its proper divisors (18586755).

28448925 is a wasteful number, since it uses less digits than its factorization.

28448925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379332 (or 379327 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 28448925 is about 5333.7533688764. The cubic root of 28448925 is about 305.2731584928.

The spelling of 28448925 in words is "twenty-eight million, four hundred forty-eight thousand, nine hundred twenty-five".