28479697 has 8 divisors (see below), whose sum is σ = 29304576. Its totient is φ = 27664032.

The previous prime is 28479673. The next prime is 28479701. The reversal of 28479697 is 79697482.

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 28479697 - 2⁷ = 28479569 is a prime.

It is a super-2 number, since 2×28479697² = 1622186282423618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28479637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4228 + ... + 8650.

It is an arithmetic number, because the mean of its divisors is an integer number (3663072).

Almost surely, 2^28479697 is an apocalyptic number.

It is an amenable number.

28479697 is a deficient number, since it is larger than the sum of its proper divisors (824879).

28479697 is a wasteful number, since it uses less digits than its factorization.

28479697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4607.

The product of its digits is 1524096, while the sum is 52.

The square root of 28479697 is about 5336.6372370623. The cubic root of 28479697 is about 305.3831858569.

It can be divided in two parts, 2847 and 9697, that added together give a square (12544 = 112²).

The spelling of 28479697 in words is "twenty-eight million, four hundred seventy-nine thousand, six hundred ninety-seven".