20392748492 has 12 divisors (see below), whose sum is σ = 35695186800. Its totient is φ = 10194123696.

The previous prime is 20392748473. The next prime is 20392748557. The reversal of 20392748492 is 29484729302.

It is a self number, because there is not a number n which added to its sum of digits gives 20392748492.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542168 + ... + 578559.

It is an arithmetic number, because the mean of its divisors is an integer number (2974598900).

Almost surely, 2^20392748492 is an apocalyptic number.

It is an amenable number.

20392748492 is a deficient number, since it is larger than the sum of its proper divisors (15302438308).

20392748492 is a wasteful number, since it uses less digits than its factorization.

20392748492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125280 (or 1125278 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 20392748492 in words is "twenty billion, three hundred ninety-two million, seven hundred forty-eight thousand, four hundred ninety-two".