28240239115 has 16 divisors (see below), whose sum is σ = 36972472320. Its totient is φ = 20536449120.

The previous prime is 28240239107. The next prime is 28240239127. The reversal of 28240239115 is 51193204282.

It is not a de Polignac number, because 28240239115 - 2³ = 28240239107 is a prime.

It is a super-2 number, since 2×28240239115² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 888976 + ... + 920194.

It is an arithmetic number, because the mean of its divisors is an integer number (2310779520).

Almost surely, 2^28240239115 is an apocalyptic number.

28240239115 is a deficient number, since it is larger than the sum of its proper divisors (8732233205).

28240239115 is a wasteful number, since it uses less digits than its factorization.

28240239115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47682.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 28240239115 in words is "twenty-eight billion, two hundred forty million, two hundred thirty-nine thousand, one hundred fifteen".