28394190616 has 32 divisors (see below), whose sum is σ = 58117435200. Its totient is φ = 12897915040.

The previous prime is 28394190613. The next prime is 28394190637. The reversal of 28394190616 is 61609149382.

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 28394190616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28394190611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28095 + ... + 239953.

It is an arithmetic number, because the mean of its divisors is an integer number (1816169850).

Almost surely, 2^28394190616 is an apocalyptic number.

It is an amenable number.

28394190616 is an abundant number, since it is smaller than the sum of its proper divisors (29723244584).

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

28394190616 is a wasteful number, since it uses less digits than its factorization.

28394190616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213399 (or 213395 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 49.

The spelling of 28394190616 in words is "twenty-eight billion, three hundred ninety-four million, one hundred ninety thousand, six hundred sixteen".