20860007028 has 24 divisors (see below), whose sum is σ = 55626685632. Its totient is φ = 5960001984.

The previous prime is 20860007017. The next prime is 20860007057. The reversal of 20860007028 is 82070006802.

It is a self number, because there is not a number n which added to its sum of digits gives 20860007028.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 124166625 + ... + 124166792.

It is an arithmetic number, because the mean of its divisors is an integer number (2317778568).

Almost surely, 2^20860007028 is an apocalyptic number.

20860007028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20860007028 is an abundant number, since it is smaller than the sum of its proper divisors (34766678604).

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

20860007028 is a wasteful number, since it uses less digits than its factorization.

20860007028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248333431 (or 248333429 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The spelling of 20860007028 in words is "twenty billion, eight hundred sixty million, seven thousand, twenty-eight".