28718148 has 12 divisors (see below), whose sum is σ = 67009040. Its totient is φ = 9572712.

The previous prime is 28718147. The next prime is 28718153. The reversal of 28718148 is 84181782.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28718147) 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 3 ways as a sum of consecutive naturals, for example, 1196578 + ... + 1196601.

Almost surely, 2^28718148 is an apocalyptic number.

It is an amenable number.

28718148 is an abundant number, since it is smaller than the sum of its proper divisors (38290892).

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

28718148 is a wasteful number, since it uses less digits than its factorization.

28718148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393186 (or 2393184 counting only the distinct ones).

The product of its digits is 28672, while the sum is 39.

The square root of 28718148 is about 5358.9316099387. The cubic root of 28718148 is about 306.2331087171.

The spelling of 28718148 in words is "twenty-eight million, seven hundred eighteen thousand, one hundred forty-eight".