5620391988 has 12 divisors (see below), whose sum is σ = 13114248000. Its totient is φ = 1873463992.

The previous prime is 5620391963. The next prime is 5620392017. The reversal of 5620391988 is 8891930265.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 5620391988.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234182988 + ... + 234183011.

It is an arithmetic number, because the mean of its divisors is an integer number (1092854000).

Almost surely, 2^5620391988 is an apocalyptic number.

It is an amenable number.

5620391988 is an abundant number, since it is smaller than the sum of its proper divisors (7493856012).

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

5620391988 is a wasteful number, since it uses less digits than its factorization.

5620391988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468366006 (or 468366004 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 51.

The square root of 5620391988 is about 74969.2736259329. The cubic root of 5620391988 is about 1777.9608838095.

The spelling of 5620391988 in words is "five billion, six hundred twenty million, three hundred ninety-one thousand, nine hundred eighty-eight".