20286619592 has 36 divisors (see below), whose sum is σ = 39121979715. Its totient is φ = 9861914880.

The previous prime is 20286619567. The next prime is 20286619601. The reversal of 20286619592 is 29591668202.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 12050331076 + 8236288516 = 109774^2 + 90754^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=100714.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20286619592.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14904992 + ... + 14906352.

Almost surely, 2^20286619592 is an apocalyptic number.

It is an amenable number.

20286619592 is a deficient number, since it is larger than the sum of its proper divisors (18835360123).

20286619592 is an frugal number, since it uses more digits than its factorization.

20286619592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802 (or 1400 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 50.

Multiplying 20286619592 by its sum of digits (50), we get a square (1014330979600 = 1007140²).

The spelling of 20286619592 in words is "twenty billion, two hundred eighty-six million, six hundred nineteen thousand, five hundred ninety-two".