198947750 has 16 divisors (see below), whose sum is σ = 372430656. Its totient is φ = 79579000.

The previous prime is 198947741. The next prime is 198947767. The reversal of 198947750 is 57749891.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397646 + ... + 398145.

It is an arithmetic number, because the mean of its divisors is an integer number (23276916).

Almost surely, 2^198947750 is an apocalyptic number.

198947750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198947750 is a deficient number, since it is larger than the sum of its proper divisors (173482906).

198947750 is an equidigital number, since it uses as much as digits as its factorization.

198947750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795808 (or 795798 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 50.

The square root of 198947750 is about 14104.8839059384. The cubic root of 198947750 is about 583.7761445005.

The spelling of 198947750 in words is "one hundred ninety-eight million, nine hundred forty-seven thousand, seven hundred fifty".