198934380 has 72 divisors (see below), whose sum is σ = 625798992. Its totient is φ = 53047872.

The previous prime is 198934367. The next prime is 198934397. The reversal of 198934380 is 83439891.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15607 + ... + 25326.

Almost surely, 2^198934380 is an apocalyptic number.

198934380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198934380 is an abundant number, since it is smaller than the sum of its proper divisors (426864612).

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

198934380 is a wasteful number, since it uses less digits than its factorization.

198934380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40957 (or 40943 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 198934380 is about 14104.4099486650. The cubic root of 198934380 is about 583.7630669262.

The spelling of 198934380 in words is "one hundred ninety-eight million, nine hundred thirty-four thousand, three hundred eighty".