28745742202 has 8 divisors (see below), whose sum is σ = 43153701300. Its totient is φ = 14361175104.

The previous prime is 28745742199. The next prime is 28745742203. The reversal of 28745742202 is 20224754782.

It can be written as a sum of positive squares in 2 ways, for example, as 19796771401 + 8948970801 = 140701^2 + 94599^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28745742203) 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 3 ways as a sum of consecutive naturals, for example, 5844927 + ... + 5849842.

Almost surely, 2^28745742202 is an apocalyptic number.

28745742202 is a deficient number, since it is larger than the sum of its proper divisors (14407959098).

28745742202 is a wasteful number, since it uses less digits than its factorization.

28745742202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11696000.

The product of its (nonzero) digits is 501760, while the sum is 43.

The spelling of 28745742202 in words is "twenty-eight billion, seven hundred forty-five million, seven hundred forty-two thousand, two hundred two".