28453397 has 8 divisors (see below), whose sum is σ = 32564352. Its totient is φ = 24354000.

The previous prime is 28453391. The next prime is 28453409. The reversal of 28453397 is 79335482.

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 28453397 - 2¹² = 28449301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28453391) 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, 3272 + ... + 8222.

It is an arithmetic number, because the mean of its divisors is an integer number (4070544).

Almost surely, 2^28453397 is an apocalyptic number.

It is an amenable number.

28453397 is a deficient number, since it is larger than the sum of its proper divisors (4110955).

28453397 is an equidigital number, since it uses as much as digits as its factorization.

28453397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5779.

The product of its digits is 181440, while the sum is 41.

The square root of 28453397 is about 5334.1725693869. The cubic root of 28453397 is about 305.2891533566.

The spelling of 28453397 in words is "twenty-eight million, four hundred fifty-three thousand, three hundred ninety-seven".