28119216 has 40 divisors (see below), whose sum is σ = 72852480. Its totient is φ = 9345856.

The previous prime is 28119199. The next prime is 28119227. The reversal of 28119216 is 61291182.

It is a happy number.

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, 22381 + ... + 23603.

It is an arithmetic number, because the mean of its divisors is an integer number (1821312).

Almost surely, 2^28119216 is an apocalyptic number.

It is an amenable number.

28119216 is an abundant number, since it is smaller than the sum of its proper divisors (44733264).

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

28119216 is a wasteful number, since it uses less digits than its factorization.

28119216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1713 (or 1707 counting only the distinct ones).

The product of its digits is 1728, while the sum is 30.

The square root of 28119216 is about 5302.7555101098. The cubic root of 28119216 is about 304.0892512642.

The spelling of 28119216 in words is "twenty-eight million, one hundred nineteen thousand, two hundred sixteen".