28416219 has 16 divisors (see below), whose sum is σ = 41056512. Its totient is φ = 17378208.

The previous prime is 28416217. The next prime is 28416251. The reversal of 28416219 is 91261482.

It is not a de Polignac number, because 28416219 - 2¹ = 28416217 is a prime.

It is a super-2 number, since 2×28416219² = 1614963004511922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28416219.

It is not an unprimeable number, because it can be changed into a prime (28416217) 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, 4332 + ... + 8694.

It is an arithmetic number, because the mean of its divisors is an integer number (2566032).

Almost surely, 2^28416219 is an apocalyptic number.

28416219 is a deficient number, since it is larger than the sum of its proper divisors (12640293).

28416219 is a wasteful number, since it uses less digits than its factorization.

28416219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4546.

The product of its digits is 6912, while the sum is 33.

The square root of 28416219 is about 5330.6865411502. The cubic root of 28416219 is about 305.1561289686.

The spelling of 28416219 in words is "twenty-eight million, four hundred sixteen thousand, two hundred nineteen".