28880053 has 4 divisors (see below), whose sum is σ = 28918188. Its totient is φ = 28841920.

The previous prime is 28880051. The next prime is 28880063. The reversal of 28880053 is 35008882.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9721924 + 19158129 = 3118^2 + 4377^2 .

It is a cyclic number.

It is not a de Polignac number, because 28880053 - 2¹ = 28880051 is a prime.

It is a super-2 number, since 2×28880053² = 1668114922565618, 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 (28880051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17908 + ... + 19453.

It is an arithmetic number, because the mean of its divisors is an integer number (7229547).

Almost surely, 2^28880053 is an apocalyptic number.

It is an amenable number.

28880053 is a deficient number, since it is larger than the sum of its proper divisors (38135).

28880053 is an equidigital number, since it uses as much as digits as its factorization.

28880053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38134.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 28880053 is about 5374.0164681549. The cubic root of 28880053 is about 306.8075165579.

The spelling of 28880053 in words is "twenty-eight million, eight hundred eighty thousand, fifty-three".