28423502515 has 8 divisors (see below), whose sum is σ = 34115292288. Its totient is φ = 22734075840.

The previous prime is 28423502489. The next prime is 28423502537. The reversal of 28423502515 is 51520532482.

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

It is a de Polignac number, because none of the positive numbers 2^k-28423502515 is a prime.

It is a super-2 number, since 2×28423502515² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 564202 + ... + 612511.

It is an arithmetic number, because the mean of its divisors is an integer number (4264411536).

Almost surely, 2^28423502515 is an apocalyptic number.

28423502515 is a deficient number, since it is larger than the sum of its proper divisors (5691789773).

28423502515 is a wasteful number, since it uses less digits than its factorization.

28423502515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181549.

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 28423502515 in words is "twenty-eight billion, four hundred twenty-three million, five hundred two thousand, five hundred fifteen".