28017638279394 has 32 divisors (see below), whose sum is σ = 56121620777856. Its totient is φ = 9324833112960.

The previous prime is 28017638279369. The next prime is 28017638279413. The reversal of 28017638279394 is 49397283671082.

It is a super-3 number, since 3×28017638279394³ (a number of 41 digits) contains 333 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, 8765134 + ... + 11526614.

It is an arithmetic number, because the mean of its divisors is an integer number (1753800649308).

Almost surely, 2^{28017638279394} is an apocalyptic number.

28017638279394 is an abundant number, since it is smaller than the sum of its proper divisors (28103982498462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28017638279394 is a wasteful number, since it uses less digits than its factorization.

28017638279394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2764090.

The product of its (nonzero) digits is 219469824, while the sum is 69.

The spelling of 28017638279394 in words is "twenty-eight trillion, seventeen billion, six hundred thirty-eight million, two hundred seventy-nine thousand, three hundred ninety-four".