28153867020 has 24 divisors (see below), whose sum is σ = 78830827824. Its totient is φ = 7507697856.

The previous prime is 28153867019. The next prime is 28153867031. The reversal of 28153867020 is 2076835182.

It is a super-3 number, since 3×28153867020³ (a number of 32 digits) contains 333 as substring.

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 7 ways as a sum of consecutive naturals, for example, 234615499 + ... + 234615618.

It is an arithmetic number, because the mean of its divisors is an integer number (3284617826).

Almost surely, 2^28153867020 is an apocalyptic number.

28153867020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28153867020 is an abundant number, since it is smaller than the sum of its proper divisors (50676960804).

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

28153867020 is a wasteful number, since it uses less digits than its factorization.

28153867020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469231129 (or 469231127 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 28153867020 in words is "twenty-eight billion, one hundred fifty-three million, eight hundred sixty-seven thousand, twenty".