28219606 has 4 divisors (see below), whose sum is σ = 42329412. Its totient is φ = 14109802.

The previous prime is 28219601. The next prime is 28219613. The reversal of 28219606 is 60691282.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28219601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7054900 + ... + 7054903.

It is an arithmetic number, because the mean of its divisors is an integer number (10582353).

Almost surely, 2^28219606 is an apocalyptic number.

28219606 is a deficient number, since it is larger than the sum of its proper divisors (14109806).

28219606 is a wasteful number, since it uses less digits than its factorization.

28219606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14109805.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 28219606 is about 5312.2129098898. The cubic root of 28219606 is about 304.4507035237.

The spelling of 28219606 in words is "twenty-eight million, two hundred nineteen thousand, six hundred six".