28351706 has 8 divisors (see below), whose sum is σ = 43516704. Its totient is φ = 13846140.

The previous prime is 28351703. The next prime is 28351711. The reversal of 28351706 is 60715382.

It is a happy number.

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

It is a super-2 number, since 2×28351706² = 1607638466220872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28351703) 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, 164750 + ... + 164921.

It is an arithmetic number, because the mean of its divisors is an integer number (5439588).

Almost surely, 2^28351706 is an apocalyptic number.

28351706 is a deficient number, since it is larger than the sum of its proper divisors (15164998).

28351706 is a wasteful number, since it uses less digits than its factorization.

28351706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329716.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 28351706 is about 5324.6320060639. The cubic root of 28351706 is about 304.9250232258.

The spelling of 28351706 in words is "twenty-eight million, three hundred fifty-one thousand, seven hundred six".