28499743 has 8 divisors (see below), whose sum is σ = 29160000. Its totient is φ = 27844128.

The previous prime is 28499741. The next prime is 28499747. The reversal of 28499743 is 34799482.

It is a happy number.

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 28499743 - 2¹ = 28499741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28499693 and 28499702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28499741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13258 + ... + 15256.

It is an arithmetic number, because the mean of its divisors is an integer number (3645000).

Almost surely, 2^28499743 is an apocalyptic number.

28499743 is a deficient number, since it is larger than the sum of its proper divisors (660257).

28499743 is a wasteful number, since it uses less digits than its factorization.

28499743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2321.

The product of its digits is 435456, while the sum is 46.

The square root of 28499743 is about 5338.5150557060. The cubic root of 28499743 is about 305.4548190582.

The spelling of 28499743 in words is "twenty-eight million, four hundred ninety-nine thousand, seven hundred forty-three".