28536819 has 8 divisors (see below), whose sum is σ = 38154240. Its totient is φ = 18971976.

The previous prime is 28536797. The next prime is 28536847. The reversal of 28536819 is 91863582.

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

It is not a de Polignac number, because 28536819 - 2⁷ = 28536691 is a prime.

It is a super-2 number, since 2×28536819² = 1628700077277522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28536889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11859 + ... + 14060.

It is an arithmetic number, because the mean of its divisors is an integer number (4769280).

Almost surely, 2^28536819 is an apocalyptic number.

28536819 is a deficient number, since it is larger than the sum of its proper divisors (9617421).

28536819 is a wasteful number, since it uses less digits than its factorization.

28536819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26289.

The product of its digits is 103680, while the sum is 42.

The square root of 28536819 is about 5341.9864282868. The cubic root of 28536819 is about 305.5872194967.

The spelling of 28536819 in words is "twenty-eight million, five hundred thirty-six thousand, eight hundred nineteen".