28823518288242 has 48 divisors (see below), whose sum is σ = 62734346984088. Its totient is φ = 9564261062400.

The previous prime is 28823518288231. The next prime is 28823518288249. The reversal of 28823518288242 is 24288281532882.

It is a happy number.

28823518288242 is a `hidden beast` number, since 2 + 8 + 8 + 235 + 1 + 82 + 88 + 242 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 14114229985881 + 14709288302361 = 3756891^2 + 3835269^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28823518288242.

It is not an unprimeable number, because it can be changed into a prime (28823518288249) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16326492 + ... + 18005592.

Almost surely, 2^{28823518288242} is an apocalyptic number.

28823518288242 is an abundant number, since it is smaller than the sum of its proper divisors (33910828695846).

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

28823518288242 is a wasteful number, since it uses less digits than its factorization.

28823518288242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683435 (or 1683432 counting only the distinct ones).

The product of its digits is 62914560, while the sum is 63.

The spelling of 28823518288242 in words is "twenty-eight trillion, eight hundred twenty-three billion, five hundred eighteen million, two hundred eighty-eight thousand, two hundred forty-two".