28454907 has 8 divisors (see below), whose sum is σ = 40858384. Its totient is φ = 17510688.

The previous prime is 28454879. The next prime is 28454911. The reversal of 28454907 is 70945482.

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

It is not a de Polignac number, because 28454907 - 2⁶ = 28454843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 729613 = 28454907 / (2 + 8 + 4 + 5 + 4 + 9 + 0 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28454917) 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, 364768 + ... + 364845.

It is an arithmetic number, because the mean of its divisors is an integer number (5107298).

Almost surely, 2^28454907 is an apocalyptic number.

28454907 is a deficient number, since it is larger than the sum of its proper divisors (12403477).

28454907 is a wasteful number, since it uses less digits than its factorization.

28454907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729629.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 28454907 is about 5334.3141077368. The cubic root of 28454907 is about 305.2945537483.

The spelling of 28454907 in words is "twenty-eight million, four hundred fifty-four thousand, nine hundred seven".