28545066420 has 96 divisors (see below), whose sum is σ = 86926815360. Its totient is φ = 6956889600.

The previous prime is 28545066409. The next prime is 28545066439. The reversal of 28545066420 is 2466054582.

It is a happy number.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102390 + ... + 259949.

It is an arithmetic number, because the mean of its divisors is an integer number (905487660).

Almost surely, 2^28545066420 is an apocalyptic number.

28545066420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28545066420 is an abundant number, since it is smaller than the sum of its proper divisors (58381748940).

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

28545066420 is a wasteful number, since it uses less digits than its factorization.

28545066420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362465 (or 362463 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 42.

The spelling of 28545066420 in words is "twenty-eight billion, five hundred forty-five million, sixty-six thousand, four hundred twenty".