28812338403 has 8 divisors (see below), whose sum is σ = 38661142608. Its totient is φ = 19085879904.

The previous prime is 28812338351. The next prime is 28812338453. The reversal of 28812338403 is 30483321882.

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

It is not a de Polignac number, because 28812338403 - 2⁸ = 28812338147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28812338453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30585876 + ... + 30586817.

It is an arithmetic number, because the mean of its divisors is an integer number (4832642826).

Almost surely, 2^28812338403 is an apocalyptic number.

28812338403 is a deficient number, since it is larger than the sum of its proper divisors (9848804205).

28812338403 is a wasteful number, since it uses less digits than its factorization.

28812338403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61172853.

The product of its (nonzero) digits is 221184, while the sum is 42.

The spelling of 28812338403 in words is "twenty-eight billion, eight hundred twelve million, three hundred thirty-eight thousand, four hundred three".