64198240 has 48 divisors (see below), whose sum is σ = 154913472. Its totient is φ = 25129984.

The previous prime is 64198237. The next prime is 64198247. The reversal of 64198240 is 4289146.

64198240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 64198196 and 64198205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64198247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3252 + ... + 11788.

It is an arithmetic number, because the mean of its divisors is an integer number (3227364).

Almost surely, 2^64198240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64198240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77456736).

64198240 is an abundant number, since it is smaller than the sum of its proper divisors (90715232).

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

64198240 is a wasteful number, since it uses less digits than its factorization.

64198240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8599 (or 8591 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 64198240 is about 8012.3804203245. The cubic root of 64198240 is about 400.4125743098.

The spelling of 64198240 in words is "sixty-four million, one hundred ninety-eight thousand, two hundred forty".