28217048 has 16 divisors (see below), whose sum is σ = 53394000. Its totient is φ = 13978656.

The previous prime is 28217047. The next prime is 28217069. The reversal of 28217048 is 84071282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28217047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15308 + ... + 17051.

It is an arithmetic number, because the mean of its divisors is an integer number (3337125).

Almost surely, 2^28217048 is an apocalyptic number.

It is an amenable number.

28217048 is a deficient number, since it is larger than the sum of its proper divisors (25176952).

28217048 is a wasteful number, since it uses less digits than its factorization.

28217048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32474 (or 32470 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 28217048 is about 5311.9721384811. The cubic root of 28217048 is about 304.4415041461.

The spelling of 28217048 in words is "twenty-eight million, two hundred seventeen thousand, forty-eight".