28300996442 has 4 divisors (see below), whose sum is σ = 42451494666. Its totient is φ = 14150498220.

The previous prime is 28300996433. The next prime is 28300996453. The reversal of 28300996442 is 24469900382.

It is a Cunningham number, because it is equal to 168229²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28300996441 + 1 = 168229^2 + 1^2 .

It is a super-2 number, since 2×28300996442² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7075249109 + ... + 7075249112.

Almost surely, 2^28300996442 is an apocalyptic number.

28300996442 is a deficient number, since it is larger than the sum of its proper divisors (14150498224).

28300996442 is a wasteful number, since it uses less digits than its factorization.

28300996442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14150498223.

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 28300996442 in words is "twenty-eight billion, three hundred million, nine hundred ninety-six thousand, four hundred forty-two".