198442470 has 128 divisors (see below), whose sum is σ = 518307840. Its totient is φ = 48522240.

The previous prime is 198442451. The next prime is 198442471. The reversal of 198442470 is 74244891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198442471) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2511891 + ... + 2511969.

It is an arithmetic number, because the mean of its divisors is an integer number (4049280).

Almost surely, 2^198442470 is an apocalyptic number.

198442470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 198442470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259153920).

198442470 is an abundant number, since it is smaller than the sum of its proper divisors (319865370).

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

198442470 is a wasteful number, since it uses less digits than its factorization.

198442470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 198442470 is about 14086.9609923503. The cubic root of 198442470 is about 583.2815079581.

The spelling of 198442470 in words is "one hundred ninety-eight million, four hundred forty-two thousand, four hundred seventy".