198157752 has 96 divisors (see below), whose sum is σ = 599442480. Its totient is φ = 60963840.

The previous prime is 198157747. The next prime is 198157789. The reversal of 198157752 is 257751891.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 198157698 and 198157707.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 21352 + ... + 29192.

Almost surely, 2^198157752 is an apocalyptic number.

198157752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198157752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299721240).

198157752 is an abundant number, since it is smaller than the sum of its proper divisors (401284728).

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

198157752 is a wasteful number, since it uses less digits than its factorization.

198157752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7875 (or 7859 counting only the distinct ones).

The product of its digits is 176400, while the sum is 45.

The square root of 198157752 is about 14076.8516366409. The cubic root of 198157752 is about 583.0024174459.

The spelling of 198157752 in words is "one hundred ninety-eight million, one hundred fifty-seven thousand, seven hundred fifty-two".