28070357 has 8 divisors (see below), whose sum is σ = 32826816. Its totient is φ = 23500512.

The previous prime is 28070323. The next prime is 28070369. The reversal of 28070357 is 75307082.

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

It is not a de Polignac number, because 28070357 - 2⁶ = 28070293 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 (28070377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46328 + ... + 46929.

It is an arithmetic number, because the mean of its divisors is an integer number (4103352).

Almost surely, 2^28070357 is an apocalyptic number.

It is an amenable number.

28070357 is a deficient number, since it is larger than the sum of its proper divisors (4756459).

28070357 is an equidigital number, since it uses as much as digits as its factorization.

28070357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93307.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 28070357 is about 5298.1465627142. The cubic root of 28070357 is about 303.9130240851.

The spelling of 28070357 in words is "twenty-eight million, seventy thousand, three hundred fifty-seven".