28842819 has 16 divisors (see below), whose sum is σ = 39456768. Its totient is φ = 18732672.

The previous prime is 28842797. The next prime is 28842833. The reversal of 28842819 is 91824882.

It is not a de Polignac number, because 28842819 - 2¹⁶ = 28777283 is a prime.

It is a super-2 number, since 2×28842819² = 1663816415733522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28842839) 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, 47214 + ... + 47820.

It is an arithmetic number, because the mean of its divisors is an integer number (2466048).

Almost surely, 2^28842819 is an apocalyptic number.

28842819 is a deficient number, since it is larger than the sum of its proper divisors (10613949).

28842819 is a wasteful number, since it uses less digits than its factorization.

28842819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994.

The product of its digits is 73728, while the sum is 42.

The square root of 28842819 is about 5370.5510890410. The cubic root of 28842819 is about 306.6756079361.

The spelling of 28842819 in words is "twenty-eight million, eight hundred forty-two thousand, eight hundred nineteen".