64434120 has 64 divisors (see below), whose sum is σ = 199549440. Its totient is φ = 16627200.

The previous prime is 64434091. The next prime is 64434121. The reversal of 64434120 is 2143446.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (64434121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4941 + ... + 12380.

It is an arithmetic number, because the mean of its divisors is an integer number (3117960).

Almost surely, 2^64434120 is an apocalyptic number.

64434120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64434120 is an abundant number, since it is smaller than the sum of its proper divisors (135115320).

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

64434120 is a wasteful number, since it uses less digits than its factorization.

64434120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17366 (or 17362 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 64434120 is about 8027.0866446053. The cubic root of 64434120 is about 400.9023794143.

Adding to 64434120 its reverse (2143446), we get a palindrome (66577566).

The spelling of 64434120 in words is "sixty-four million, four hundred thirty-four thousand, one hundred twenty".