28000305502999 has 8 divisors (see below), whose sum is σ = 28345726332000. Its totient is φ = 27655569355392.

The previous prime is 28000305502993. The next prime is 28000305503147. The reversal of 28000305502999 is 99920550300082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28000305502999 is a prime.

It is a super-2 number, since 2×28000305502999² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28000305502993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171088054 + ... + 171251635.

It is an arithmetic number, because the mean of its divisors is an integer number (3543215791500).

Almost surely, 2^{28000305502999} is an apocalyptic number.

28000305502999 is a deficient number, since it is larger than the sum of its proper divisors (345420829001).

28000305502999 is an equidigital number, since it uses as much as digits as its factorization.

28000305502999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342340697.

The product of its (nonzero) digits is 1749600, while the sum is 52.

The spelling of 28000305502999 in words is "twenty-eight trillion, three hundred five million, five hundred two thousand, nine hundred ninety-nine".