28638294015 has 8 divisors (see below), whose sum is σ = 45821270448. Its totient is φ = 15273756800.

The previous prime is 28638293987. The next prime is 28638294073. The reversal of 28638294015 is 51049283682.

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

It is not a de Polignac number, because 28638294015 - 2¹² = 28638289919 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, 954609786 + ... + 954609815.

It is an arithmetic number, because the mean of its divisors is an integer number (5727658806).

Almost surely, 2^28638294015 is an apocalyptic number.

28638294015 is a deficient number, since it is larger than the sum of its proper divisors (17182976433).

28638294015 is a wasteful number, since it uses less digits than its factorization.

28638294015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909219609.

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 28638294015 in words is "twenty-eight billion, six hundred thirty-eight million, two hundred ninety-four thousand, fifteen".