28201924590728 has 16 divisors (see below), whose sum is σ = 60432695551680. Its totient is φ = 12086539110288.

The previous prime is 28201924590709. The next prime is 28201924590769. The reversal of 28201924590728 is 82709542910282.

It is a happy number.

It is a super-2 number, since 2×28201924590728² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251802898076 + ... + 251802898187.

It is an arithmetic number, because the mean of its divisors is an integer number (3777043471980).

Almost surely, 2^{28201924590728} is an apocalyptic number.

28201924590728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28201924590728 is an abundant number, since it is smaller than the sum of its proper divisors (32230770960952).

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

28201924590728 is a wasteful number, since it uses less digits than its factorization.

28201924590728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503605796276 (or 503605796272 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 59.

The spelling of 28201924590728 in words is "twenty-eight trillion, two hundred one billion, nine hundred twenty-four million, five hundred ninety thousand, seven hundred twenty-eight".