28490181515 has 8 divisors (see below), whose sum is σ = 34219389600. Its totient is φ = 22771364032.

The previous prime is 28490181509. The next prime is 28490181529. The reversal of 28490181515 is 51518109482.

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 28490181515 - 2¹⁸ = 28489919371 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2591615 + ... + 2602584.

It is an arithmetic number, because the mean of its divisors is an integer number (4277423700).

Almost surely, 2^28490181515 is an apocalyptic number.

28490181515 is a deficient number, since it is larger than the sum of its proper divisors (5729208085).

28490181515 is a wasteful number, since it uses less digits than its factorization.

28490181515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5195301.

The product of its (nonzero) digits is 115200, while the sum is 44.

The spelling of 28490181515 in words is "twenty-eight billion, four hundred ninety million, one hundred eighty-one thousand, five hundred fifteen".