28627819 has 8 divisors (see below), whose sum is σ = 31273200. Its totient is φ = 25989600.

The previous prime is 28627811. The next prime is 28627871. The reversal of 28627819 is 91872682.

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

It is a cyclic number.

It is not a de Polignac number, because 28627819 - 2³ = 28627811 is a prime.

It is a super-2 number, since 2×28627819² = 1639104041393522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28627811) 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, 9957 + ... + 12505.

It is an arithmetic number, because the mean of its divisors is an integer number (3909150).

Almost surely, 2^28627819 is an apocalyptic number.

28627819 is a deficient number, since it is larger than the sum of its proper divisors (2645381).

28627819 is a wasteful number, since it uses less digits than its factorization.

28627819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3581.

The product of its digits is 96768, while the sum is 43.

The square root of 28627819 is about 5350.4970797114. The cubic root of 28627819 is about 305.9117000696.

The spelling of 28627819 in words is "twenty-eight million, six hundred twenty-seven thousand, eight hundred nineteen".