28928208901050 has 72 divisors (see below), whose sum is σ = 78215489514396. Its totient is φ = 7665054059520.

The previous prime is 28928208900967. The next prime is 28928208901051. The reversal of 28928208901050 is 5010980282982.

It is a happy number.

28928208901050 is a `hidden beast` number, since 289 + 28 + 208 + 90 + 1 + 0 + 50 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 12940502538681 + 15987706362369 = 3597291^2 + 3998463^2 .

It is a super-2 number, since 2×28928208901050² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28928208901051) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 204658359 + ... + 204799658.

Almost surely, 2^{28928208901050} is an apocalyptic number.

28928208901050 is an abundant number, since it is smaller than the sum of its proper divisors (49287280613346).

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

28928208901050 is a wasteful number, since it uses less digits than its factorization.

28928208901050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409458192 (or 409458184 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 54.

The spelling of 28928208901050 in words is "twenty-eight trillion, nine hundred twenty-eight billion, two hundred eight million, nine hundred one thousand, fifty".