28153073 has 8 divisors (see below), whose sum is σ = 30475368. Its totient is φ = 25853184.

The previous prime is 28153067. The next prime is 28153121. The reversal of 28153073 is 37035182.

It can be written as a sum of positive squares in 4 ways, for example, as 3073009 + 25080064 = 1753^2 + 5008^2 .

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 28153073 - 2⁶ = 28153009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28153273) 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, 2936 + ... + 8057.

It is an arithmetic number, because the mean of its divisors is an integer number (3809421).

Almost surely, 2^28153073 is an apocalyptic number.

It is an amenable number.

28153073 is a deficient number, since it is larger than the sum of its proper divisors (2322295).

28153073 is a wasteful number, since it uses less digits than its factorization.

28153073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11203.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 28153073 is about 5305.9469465874. The cubic root of 28153073 is about 304.2112487435.

The spelling of 28153073 in words is "twenty-eight million, one hundred fifty-three thousand, seventy-three".