28018015394 has 16 divisors (see below), whose sum is σ = 42121728096. Its totient is φ = 13977468000.

The previous prime is 28018015351. The next prime is 28018015397. The reversal of 28018015394 is 49351081082.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28018015397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2382509 + ... + 2394239.

It is an arithmetic number, because the mean of its divisors is an integer number (2632608006).

Almost surely, 2^28018015394 is an apocalyptic number.

28018015394 is a deficient number, since it is larger than the sum of its proper divisors (14103712702).

28018015394 is a wasteful number, since it uses less digits than its factorization.

28018015394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14321.

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 28018015394 in words is "twenty-eight billion, eighteen million, fifteen thousand, three hundred ninety-four".