28320613446 has 32 divisors (see below), whose sum is σ = 59980314240. Its totient is φ = 8883824256.

The previous prime is 28320613427. The next prime is 28320613471. The reversal of 28320613446 is 64431602382.

It is a Curzon number.

It is a congruent number.

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, 1498065 + ... + 1516851.

It is an arithmetic number, because the mean of its divisors is an integer number (1874384820).

Almost surely, 2^28320613446 is an apocalyptic number.

28320613446 is an abundant number, since it is smaller than the sum of its proper divisors (31659700794).

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

28320613446 is a wasteful number, since it uses less digits than its factorization.

28320613446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33588.

The product of its (nonzero) digits is 165888, while the sum is 39.

The spelling of 28320613446 in words is "twenty-eight billion, three hundred twenty million, six hundred thirteen thousand, four hundred forty-six".