198220740 has 24 divisors (see below), whose sum is σ = 555018240. Its totient is φ = 52858848.

The previous prime is 198220721. The next prime is 198220741. The reversal of 198220740 is 47022891.

It is a happy number.

198220740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×198220740² = 78582923532295200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (198220741) 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, 1651780 + ... + 1651899.

It is an arithmetic number, because the mean of its divisors is an integer number (23125760).

Almost surely, 2^198220740 is an apocalyptic number.

198220740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198220740 is an abundant number, since it is smaller than the sum of its proper divisors (356797500).

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

198220740 is a wasteful number, since it uses less digits than its factorization.

198220740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303691 (or 3303689 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 198220740 is about 14079.0887489212. The cubic root of 198220740 is about 583.0641834978.

It can be divided in two parts, 1982 and 20740, that added together give a palindrome (22722).

The spelling of 198220740 in words is "one hundred ninety-eight million, two hundred twenty thousand, seven hundred forty".