28320818774 has 8 divisors (see below), whose sum is σ = 42491574048. Its totient is φ = 14156960760.

The previous prime is 28320818767. The next prime is 28320818797. The reversal of 28320818774 is 47781802382.

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

It is a super-3 number, since 3×28320818774³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

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, 1714037 + ... + 1730480.

It is an arithmetic number, because the mean of its divisors is an integer number (5311446756).

Almost surely, 2^28320818774 is an apocalyptic number.

28320818774 is a deficient number, since it is larger than the sum of its proper divisors (14170755274).

28320818774 is a wasteful number, since it uses less digits than its factorization.

28320818774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448630.

The product of its (nonzero) digits is 1204224, while the sum is 50.

The spelling of 28320818774 in words is "twenty-eight billion, three hundred twenty million, eight hundred eighteen thousand, seven hundred seventy-four".