28601428450 has 24 divisors (see below), whose sum is σ = 60798465792. Its totient is φ = 9806203920.

The previous prime is 28601428369. The next prime is 28601428459. The reversal of 28601428450 is 5482410682.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28601428459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40858834 + ... + 40859533.

It is an arithmetic number, because the mean of its divisors is an integer number (2533269408).

Almost surely, 2^28601428450 is an apocalyptic number.

28601428450 is an abundant number, since it is smaller than the sum of its proper divisors (32197037342).

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

28601428450 is a wasteful number, since it uses less digits than its factorization.

28601428450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81718386 (or 81718381 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 40.

The spelling of 28601428450 in words is "twenty-eight billion, six hundred one million, four hundred twenty-eight thousand, four hundred fifty".