28288051 has 8 divisors (see below), whose sum is σ = 32675184. Its totient is φ = 24203520.

The previous prime is 28288037. The next prime is 28288067. The reversal of 28288051 is 15088282.

It is a happy number.

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

It is not a de Polignac number, because 28288051 - 2⁵ = 28288019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28287998 and 28288016.

It is not an unprimeable number, because it can be changed into a prime (28288751) 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, 75450 + ... + 75823.

It is an arithmetic number, because the mean of its divisors is an integer number (4084398).

Almost surely, 2^28288051 is an apocalyptic number.

28288051 is a deficient number, since it is larger than the sum of its proper divisors (4387133).

28288051 is a wasteful number, since it uses less digits than its factorization.

28288051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151301.

The product of its (nonzero) digits is 10240, while the sum is 34.

The square root of 28288051 is about 5318.6512388011. The cubic root of 28288051 is about 304.6966472345.

The spelling of 28288051 in words is "twenty-eight million, two hundred eighty-eight thousand, fifty-one".