28313604381720 has 128 divisors (see below), whose sum is σ = 97078613990400. Its totient is φ = 6471454404096.

The previous prime is 28313604381703. The next prime is 28313604381737. The reversal of 28313604381720 is 2718340631382.

It is an interprime number because it is at equal distance from previous prime (28313604381703) and next prime (28313604381737).

It is a self number, because there is not a number n which added to its sum of digits gives 28313604381720.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24025626 + ... + 25176534.

It is an arithmetic number, because the mean of its divisors is an integer number (758426671800).

Almost surely, 2^{28313604381720} is an apocalyptic number.

28313604381720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28313604381720 is an abundant number, since it is smaller than the sum of its proper divisors (68765009608680).

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

28313604381720 is a wasteful number, since it uses less digits than its factorization.

28313604381720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180217 (or 1180213 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 28313604381720 in words is "twenty-eight trillion, three hundred thirteen billion, six hundred four million, three hundred eighty-one thousand, seven hundred twenty".