28020062386404 has 243 divisors, whose sum is σ = 78553065835881. Its totient is φ = 8415232404480.

The previous prime is 28020062386339. The next prime is 28020062386427. The reversal of 28020062386404 is 40468326002082.

The square root of 28020062386404 is 5293398.

It is a perfect power (a square), and thus also a powerful number.

28020062386404 is a `hidden beast` number, since 2 + 8 + 0 + 2 + 0 + 0 + 6 + 238 + 6 + 404 = 666.

It can be written as a sum of positive squares in only one way, i.e., 27826152502500 + 193909883904 = 5275050^2 + 440352^2 .

It is a super-2 number, since 2×28020062386404² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28020062386404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 48561632964 + ... + 48561633540.

Almost surely, 2^{28020062386404} is an apocalyptic number.

28020062386404 is the 5293398-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28020062386404

28020062386404 is an abundant number, since it is smaller than the sum of its proper divisors (50533003449477).

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

28020062386404 is a wasteful number, since it uses less digits than its factorization.

28020062386404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464 (or 732 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 45.

Adding to 28020062386404 its reverse (40468326002082), we get a palindrome (68488388388486).

The spelling of 28020062386404 in words is "twenty-eight trillion, twenty billion, sixty-two million, three hundred eighty-six thousand, four hundred four".