28399356015 has 8 divisors (see below), whose sum is σ = 45438969648. Its totient is φ = 15146323200.

The previous prime is 28399355969. The next prime is 28399356049. The reversal of 28399356015 is 51065399382.

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

It is not a de Polignac number, because 28399356015 - 2⁶ = 28399355951 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 946645186 + ... + 946645215.

It is an arithmetic number, because the mean of its divisors is an integer number (5679871206).

Almost surely, 2^28399356015 is an apocalyptic number.

28399356015 is a deficient number, since it is larger than the sum of its proper divisors (17039613633).

28399356015 is a wasteful number, since it uses less digits than its factorization.

28399356015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893290409.

The product of its (nonzero) digits is 1749600, while the sum is 51.

The spelling of 28399356015 in words is "twenty-eight billion, three hundred ninety-nine million, three hundred fifty-six thousand, fifteen".