28780000318 has 8 divisors (see below), whose sum is σ = 43480576440. Its totient is φ = 14286474840.

The previous prime is 28780000313. The next prime is 28780000331. The reversal of 28780000318 is 81300008782.

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

It is a super-2 number, since 2×28780000318² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28780000313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51762313 + ... + 51762868.

It is an arithmetic number, because the mean of its divisors is an integer number (5435072055).

Almost surely, 2^28780000318 is an apocalyptic number.

28780000318 is a deficient number, since it is larger than the sum of its proper divisors (14700576122).

28780000318 is a wasteful number, since it uses less digits than its factorization.

28780000318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103525322.

The product of its (nonzero) digits is 21504, while the sum is 37.

The spelling of 28780000318 in words is "twenty-eight billion, seven hundred eighty million, three hundred eighteen", and thus it is an aban number.