28493086 has 8 divisors (see below), whose sum is σ = 42762744. Its totient is φ = 14238840.

The previous prime is 28493077. The next prime is 28493089. The reversal of 28493086 is 68039482.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28493089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3856 + ... + 8476.

It is an arithmetic number, because the mean of its divisors is an integer number (5345343).

Almost surely, 2^28493086 is an apocalyptic number.

28493086 is a deficient number, since it is larger than the sum of its proper divisors (14269658).

28493086 is a wasteful number, since it uses less digits than its factorization.

28493086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7706.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 28493086 is about 5337.8915313071. The cubic root of 28493086 is about 305.4310343867.

The spelling of 28493086 in words is "twenty-eight million, four hundred ninety-three thousand, eighty-six".