28328401218 has 16 divisors (see below), whose sum is σ = 61015018176. Its totient is φ = 8716431120.

The previous prime is 28328401207. The next prime is 28328401223. The reversal of 28328401218 is 81210482382.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 181592238 + ... + 181592393.

It is an arithmetic number, because the mean of its divisors is an integer number (3813438636).

Almost surely, 2^28328401218 is an apocalyptic number.

28328401218 is an abundant number, since it is smaller than the sum of its proper divisors (32686616958).

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

28328401218 is a wasteful number, since it uses less digits than its factorization.

28328401218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363184649.

The product of its (nonzero) digits is 49152, while the sum is 39.

The spelling of 28328401218 in words is "twenty-eight billion, three hundred twenty-eight million, four hundred one thousand, two hundred eighteen".