28100448 has 36 divisors (see below), whose sum is σ = 79911468. Its totient is φ = 9366720.

The previous prime is 28100437. The next prime is 28100459. The reversal of 28100448 is 84400182.

It is an interprime number because it is at equal distance from previous prime (28100437) and next prime (28100459).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48498 + ... + 49073.

It is an arithmetic number, because the mean of its divisors is an integer number (2219763).

Almost surely, 2^28100448 is an apocalyptic number.

It is an amenable number.

28100448 is an abundant number, since it is smaller than the sum of its proper divisors (51811020).

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

28100448 is a wasteful number, since it uses less digits than its factorization.

28100448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97587 (or 97576 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 28100448 is about 5300.9855687410. The cubic root of 28100448 is about 304.0215820320.

The spelling of 28100448 in words is "twenty-eight million, one hundred thousand, four hundred forty-eight".