64241220 has 48 divisors (see below), whose sum is σ = 182165760. Its totient is φ = 16912896.

The previous prime is 64241209. The next prime is 64241239. The reversal of 64241220 is 2214246.

64241220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2037 + ... + 11516.

It is an arithmetic number, because the mean of its divisors is an integer number (3795120).

Almost surely, 2^64241220 is an apocalyptic number.

64241220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64241220 is an abundant number, since it is smaller than the sum of its proper divisors (117924540).

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

64241220 is a wasteful number, since it uses less digits than its factorization.

64241220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13644 (or 13642 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 64241220 is about 8015.0620708763. The cubic root of 64241220 is about 400.5019116151.

Adding to 64241220 its reverse (2214246), we get a palindrome (66455466).

The spelling of 64241220 in words is "sixty-four million, two hundred forty-one thousand, two hundred twenty".