16308399428 has 48 divisors (see below), whose sum is σ = 30238064640. Its totient is φ = 7674717600.

The previous prime is 16308399407. The next prime is 16308399433. The reversal of 16308399428 is 82499380361.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 16308399428.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16456013 + ... + 16457003.

It is an arithmetic number, because the mean of its divisors is an integer number (629959680).

Almost surely, 2^16308399428 is an apocalyptic number.

It is an amenable number.

16308399428 is a deficient number, since it is larger than the sum of its proper divisors (13929665212).

16308399428 is a wasteful number, since it uses less digits than its factorization.

16308399428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208 (or 2206 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 53.

The spelling of 16308399428 in words is "sixteen billion, three hundred eight million, three hundred ninety-nine thousand, four hundred twenty-eight".