28912121202 has 8 divisors (see below), whose sum is σ = 57824242416. Its totient is φ = 9637373732.

The previous prime is 28912121179. The next prime is 28912121207. The reversal of 28912121202 is 20212121982.

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

28912121202 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 28912121202.

It is not an unprimeable number, because it can be changed into a prime (28912121207) 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, 2409343428 + ... + 2409343439.

It is an arithmetic number, because the mean of its divisors is an integer number (7228030302).

Almost surely, 2^28912121202 is an apocalyptic number.

28912121202 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28912121202 is a wasteful number, since it uses less digits than its factorization.

28912121202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4818686872.

The product of its (nonzero) digits is 2304, while the sum is 30.

The spelling of 28912121202 in words is "twenty-eight billion, nine hundred twelve million, one hundred twenty-one thousand, two hundred two".