820243130028 has 96 divisors (see below), whose sum is σ = 2378574825984. Its totient is φ = 214608227328.

The previous prime is 820243130023. The next prime is 820243130033. The reversal of 820243130028 is 820031342028.

It is an interprime number because it is at equal distance from previous prime (820243130023) and next prime (820243130033).

It is not an unprimeable number, because it can be changed into a prime (820243130023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7709326 + ... + 7814997.

It is an arithmetic number, because the mean of its divisors is an integer number (24776821104).

Almost surely, 2^820243130028 is an apocalyptic number.

It is an amenable number.

820243130028 is an abundant number, since it is smaller than the sum of its proper divisors (1558331695956).

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

820243130028 is a wasteful number, since it uses less digits than its factorization.

820243130028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15524391 (or 15524389 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The spelling of 820243130028 in words is "eight hundred twenty billion, two hundred forty-three million, one hundred thirty thousand, twenty-eight".