198428487750 has 64 divisors (see below), whose sum is σ = 550308358080. Its totient is φ = 52914261600.

The previous prime is 198428487739. The next prime is 198428487787. The reversal of 198428487750 is 57784824891.

198428487750 is a `hidden beast` number, since 1 + 9 + 84 + 2 + 8 + 487 + 75 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14691657 + ... + 14705156.

It is an arithmetic number, because the mean of its divisors is an integer number (8598568095).

Almost surely, 2^198428487750 is an apocalyptic number.

198428487750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198428487750 is an abundant number, since it is smaller than the sum of its proper divisors (351879870330).

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

198428487750 is a wasteful number, since it uses less digits than its factorization.

198428487750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29396839 (or 29396823 counting only the distinct ones).

The product of its (nonzero) digits is 36126720, while the sum is 63.

The spelling of 198428487750 in words is "one hundred ninety-eight billion, four hundred twenty-eight million, four hundred eighty-seven thousand, seven hundred fifty".