28878958202 has 8 divisors (see below), whose sum is σ = 43380234612. Its totient is φ = 14418880000.

The previous prime is 28878958201. The next prime is 28878958223. The reversal of 28878958202 is 20285987882.

It can be written as a sum of positive squares in 2 ways, for example, as 28102834321 + 776123881 = 167639^2 + 27859^2 .

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 (28878958201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10297799 + ... + 10300602.

Almost surely, 2^28878958202 is an apocalyptic number.

28878958202 is a deficient number, since it is larger than the sum of its proper divisors (14501276410).

28878958202 is a wasteful number, since it uses less digits than its factorization.

28878958202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20599104.

The product of its (nonzero) digits is 10321920, while the sum is 59.

The spelling of 28878958202 in words is "twenty-eight billion, eight hundred seventy-eight million, nine hundred fifty-eight thousand, two hundred two".