28309490262680 has 128 divisors (see below), whose sum is σ = 73379334412800. Its totient is φ = 9721192089600.

The previous prime is 28309490262659. The next prime is 28309490262707. The reversal of 28309490262680 is 8626209490382.

It is a hoax number, since the sum of its digits (59) 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, 2844257 + ... + 8044176.

It is an arithmetic number, because the mean of its divisors is an integer number (573276050100).

Almost surely, 2^{28309490262680} is an apocalyptic number.

28309490262680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28309490262680 is an abundant number, since it is smaller than the sum of its proper divisors (45069844150120).

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

28309490262680 is a wasteful number, since it uses less digits than its factorization.

28309490262680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10888785 (or 10888781 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 59.

The spelling of 28309490262680 in words is "twenty-eight trillion, three hundred nine billion, four hundred ninety million, two hundred sixty-two thousand, six hundred eighty".