28454739 has 8 divisors (see below), whose sum is σ = 38965200. Its totient is φ = 18457056.

The previous prime is 28454717. The next prime is 28454791. The reversal of 28454739 is 93745482.

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

It is not a de Polignac number, because 28454739 - 2⁵ = 28454707 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 28454739.

It is not an unprimeable number, because it can be changed into a prime (28444739) 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, 128064 + ... + 128285.

It is an arithmetic number, because the mean of its divisors is an integer number (4870650).

Almost surely, 2^28454739 is an apocalyptic number.

28454739 is a deficient number, since it is larger than the sum of its proper divisors (10510461).

28454739 is a wasteful number, since it uses less digits than its factorization.

28454739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256389.

The product of its digits is 241920, while the sum is 42.

The square root of 28454739 is about 5334.2983606094. The cubic root of 28454739 is about 305.2939529194.

It can be divided in two parts, 2845473 and 9, that added together give a palindrome (2845482).

The spelling of 28454739 in words is "twenty-eight million, four hundred fifty-four thousand, seven hundred thirty-nine".