28918360947 has 8 divisors (see below), whose sum is σ = 44066073856. Its totient is φ = 16524777672.

The previous prime is 28918360937. The next prime is 28918361111. The reversal of 28918360947 is 74906381982.

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

It is not a de Polignac number, because 28918360947 - 2¹⁹ = 28917836659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28918360907) 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, 688532383 + ... + 688532424.

It is an arithmetic number, because the mean of its divisors is an integer number (5508259232).

Almost surely, 2^28918360947 is an apocalyptic number.

28918360947 is a deficient number, since it is larger than the sum of its proper divisors (15147712909).

28918360947 is a wasteful number, since it uses less digits than its factorization.

28918360947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377064817.

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 28918360947 in words is "twenty-eight billion, nine hundred eighteen million, three hundred sixty thousand, nine hundred forty-seven".