28494786 has 8 divisors (see below), whose sum is σ = 56989584. Its totient is φ = 9498260.

The previous prime is 28494779. The next prime is 28494787. The reversal of 28494786 is 68749482.

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

28494786 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (28494787) 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, 2374560 + ... + 2374571.

It is an arithmetic number, because the mean of its divisors is an integer number (7123698).

Almost surely, 2^28494786 is an apocalyptic number.

28494786 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28494786 is a wasteful number, since it uses less digits than its factorization.

28494786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4749136.

The product of its digits is 774144, while the sum is 48.

The square root of 28494786 is about 5338.0507678365. The cubic root of 28494786 is about 305.4371086373.

The spelling of 28494786 in words is "twenty-eight million, four hundred ninety-four thousand, seven hundred eighty-six".