198607920 has 80 divisors (see below), whose sum is σ = 703645440. Its totient is φ = 45395712.

The previous prime is 198607901. The next prime is 198607949. The reversal of 198607920 is 29706891.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57430 + ... + 60789.

It is an arithmetic number, because the mean of its divisors is an integer number (8795568).

Almost surely, 2^198607920 is an apocalyptic number.

198607920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198607920 is an abundant number, since it is smaller than the sum of its proper divisors (505037520).

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

198607920 is a wasteful number, since it uses less digits than its factorization.

198607920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118242 (or 118236 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 198607920 is about 14092.8322206716. The cubic root of 198607920 is about 583.4435652000.

The spelling of 198607920 in words is "one hundred ninety-eight million, six hundred seven thousand, nine hundred twenty".