6223390728 has 16 divisors (see below), whose sum is σ = 15558476880. Its totient is φ = 2074463568.

The previous prime is 6223390711. The next prime is 6223390757. The reversal of 6223390728 is 8270933226.

It is a self number, because there is not a number n which added to its sum of digits gives 6223390728.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129653950 + ... + 129653997.

It is an arithmetic number, because the mean of its divisors is an integer number (972404805).

Almost surely, 2^6223390728 is an apocalyptic number.

It is an amenable number.

6223390728 is an abundant number, since it is smaller than the sum of its proper divisors (9335086152).

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

6223390728 is a wasteful number, since it uses less digits than its factorization.

6223390728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259307956 (or 259307952 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 6223390728 is about 78888.4701841784. The cubic root of 6223390728 is about 1839.3979134346.

The spelling of 6223390728 in words is "six billion, two hundred twenty-three million, three hundred ninety thousand, seven hundred twenty-eight".