28290050515 has 8 divisors (see below), whose sum is σ = 33950233728. Its totient is φ = 22630591680.

The previous prime is 28290050501. The next prime is 28290050519. The reversal of 28290050515 is 51505009282.

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

It is not a de Polignac number, because 28290050515 - 2²¹ = 28287953363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28290050519) 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, 91107 + ... + 254716.

It is an arithmetic number, because the mean of its divisors is an integer number (4243779216).

Almost surely, 2^28290050515 is an apocalyptic number.

28290050515 is a deficient number, since it is larger than the sum of its proper divisors (5660183213).

28290050515 is a wasteful number, since it uses less digits than its factorization.

28290050515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362189.

The product of its (nonzero) digits is 36000, while the sum is 37.

Adding to 28290050515 its reverse (51505009282), we get a palindrome (79795059797).

The spelling of 28290050515 in words is "twenty-eight billion, two hundred ninety million, fifty thousand, five hundred fifteen".