198927680 has 56 divisors (see below), whose sum is σ = 541373568. Its totient is φ = 68203008.

The previous prime is 198927671. The next prime is 198927689. The reversal of 198927680 is 86729891.

198927680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (198927671) and next prime (198927689).

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198927689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42164 + ... + 46643.

Almost surely, 2^198927680 is an apocalyptic number.

198927680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198927680 is an abundant number, since it is smaller than the sum of its proper divisors (342445888).

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

198927680 is an equidigital number, since it uses as much as digits as its factorization.

198927680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88831 (or 88821 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 198927680 is about 14104.1724322982. The cubic root of 198927680 is about 583.7565132468.

It can be divided in two parts, 19892 and 7680, that added together give a palindrome (27572).

The spelling of 198927680 in words is "one hundred ninety-eight million, nine hundred twenty-seven thousand, six hundred eighty".