28454869 has 8 divisors (see below), whose sum is σ = 29636352. Its totient is φ = 27289920.

The previous prime is 28454857. The next prime is 28454879. The reversal of 28454869 is 96845482.

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

It is not a de Polignac number, because 28454869 - 2⁹ = 28454357 is a prime.

It is a super-2 number, since 2×28454869² = 1619359139614322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28454819) 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, 559 + ... + 7564.

It is an arithmetic number, because the mean of its divisors is an integer number (3704544).

Almost surely, 2^28454869 is an apocalyptic number.

It is an amenable number.

28454869 is a deficient number, since it is larger than the sum of its proper divisors (1181483).

28454869 is a wasteful number, since it uses less digits than its factorization.

28454869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8267.

The product of its digits is 552960, while the sum is 46.

The square root of 28454869 is about 5334.3105458906. The cubic root of 28454869 is about 305.2944178467.

The spelling of 28454869 in words is "twenty-eight million, four hundred fifty-four thousand, eight hundred sixty-nine".