28219814 has 8 divisors (see below), whose sum is σ = 48376848. Its totient is φ = 12094200.

The previous prime is 28219783. The next prime is 28219817. The reversal of 28219814 is 41891282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28219817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1007837 + ... + 1007864.

It is an arithmetic number, because the mean of its divisors is an integer number (6047106).

Almost surely, 2^28219814 is an apocalyptic number.

28219814 is a deficient number, since it is larger than the sum of its proper divisors (20157034).

28219814 is a wasteful number, since it uses less digits than its factorization.

28219814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015710.

The product of its digits is 9216, while the sum is 35.

The square root of 28219814 is about 5312.2324873823. The cubic root of 28219814 is about 304.4514515331.

The spelling of 28219814 in words is "twenty-eight million, two hundred nineteen thousand, eight hundred fourteen".