28624352720 has 40 divisors (see below), whose sum is σ = 70054340640. Its totient is φ = 10847122560.

The previous prime is 28624352693. The next prime is 28624352723. The reversal of 28624352720 is 2725342682.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×28624352720³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28624352723) by changing a digit.

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, 9414386 + ... + 9417425.

It is an arithmetic number, because the mean of its divisors is an integer number (1751358516).

Almost surely, 2^28624352720 is an apocalyptic number.

28624352720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28624352720 is an abundant number, since it is smaller than the sum of its proper divisors (41429987920).

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

28624352720 is a wasteful number, since it uses less digits than its factorization.

28624352720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18831843 (or 18831837 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 41.

The spelling of 28624352720 in words is "twenty-eight billion, six hundred twenty-four million, three hundred fifty-two thousand, seven hundred twenty".