28713458780 has 48 divisors (see below), whose sum is σ = 60458983200. Its totient is φ = 11454824448.

The previous prime is 28713458747. The next prime is 28713458791. The reversal of 28713458780 is 8785431782.

It is a super-2 number, since 2×28713458780² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24189347 + ... + 24190533.

It is an arithmetic number, because the mean of its divisors is an integer number (1259562150).

Almost surely, 2^28713458780 is an apocalyptic number.

28713458780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28713458780 is an abundant number, since it is smaller than the sum of its proper divisors (31745524420).

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

28713458780 is a wasteful number, since it uses less digits than its factorization.

28713458780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398 (or 3396 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 53.

The spelling of 28713458780 in words is "twenty-eight billion, seven hundred thirteen million, four hundred fifty-eight thousand, seven hundred eighty".