28219485 has 16 divisors (see below), whose sum is σ = 51601536. Its totient is φ = 12900288.

The previous prime is 28219463. The next prime is 28219487. The reversal of 28219485 is 58491282.

It is not a de Polignac number, because 28219485 - 2⁵ = 28219453 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28219487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134274 + ... + 134483.

It is an arithmetic number, because the mean of its divisors is an integer number (3225096).

Almost surely, 2^28219485 is an apocalyptic number.

It is an amenable number.

28219485 is a deficient number, since it is larger than the sum of its proper divisors (23382051).

28219485 is a wasteful number, since it uses less digits than its factorization.

28219485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268772.

The product of its digits is 46080, while the sum is 39.

The square root of 28219485 is about 5312.2015210269. The cubic root of 28219485 is about 304.4502683819.

The spelling of 28219485 in words is "twenty-eight million, two hundred nineteen thousand, four hundred eighty-five".