20568248428 has 54 divisors (see below), whose sum is σ = 45339760116. Its totient is φ = 8136876384.

The previous prime is 20568248419. The next prime is 20568248453. The reversal of 20568248428 is 82484286502.

It is a Harshad number since it is a multiple of its sum of digits (49).

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 17 ways as a sum of consecutive naturals, for example, 277350 + ... + 343597.

Almost surely, 2^20568248428 is an apocalyptic number.

20568248428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20568248428 is an abundant number, since it is smaller than the sum of its proper divisors (24771511688).

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

20568248428 is a wasteful number, since it uses less digits than its factorization.

20568248428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620991 (or 620969 counting only the distinct ones).

The product of its (nonzero) digits is 1966080, while the sum is 49.

The spelling of 20568248428 in words is "twenty billion, five hundred sixty-eight million, two hundred forty-eight thousand, four hundred twenty-eight".