28308324331400 has 96 divisors (see below), whose sum is σ = 66747406017600. Its totient is φ = 11163251769600.

The previous prime is 28308324331381. The next prime is 28308324331411. The reversal of 28308324331400 is 413342380382.

It is a super-2 number, since 2×28308324331400² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 346140914 + ... + 346222686.

It is an arithmetic number, because the mean of its divisors is an integer number (695285479350).

Almost surely, 2^{28308324331400} is an apocalyptic number.

28308324331400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28308324331400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33373703008800).

28308324331400 is an abundant number, since it is smaller than the sum of its proper divisors (38439081686200).

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

28308324331400 is a wasteful number, since it uses less digits than its factorization.

28308324331400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106239 (or 106230 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 28308324331400 in words is "twenty-eight trillion, three hundred eight billion, three hundred twenty-four million, three hundred thirty-one thousand, four hundred".