64308432 has 20 divisors (see below), whose sum is σ = 166130240. Its totient is φ = 21436128.

The previous prime is 64308403. The next prime is 64308473. The reversal of 64308432 is 23480346.

It is a self number, because there is not a number n which added to its sum of digits gives 64308432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 669832 + ... + 669927.

It is an arithmetic number, because the mean of its divisors is an integer number (8306512).

Almost surely, 2^64308432 is an apocalyptic number.

It is an amenable number.

64308432 is an abundant number, since it is smaller than the sum of its proper divisors (101821808).

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

64308432 is a wasteful number, since it uses less digits than its factorization.

64308432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339770 (or 1339764 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 64308432 is about 8019.2538306254. The cubic root of 64308432 is about 400.6415371917.

Adding to 64308432 its reverse (23480346), we get a palindrome (87788778).

The spelling of 64308432 in words is "sixty-four million, three hundred eight thousand, four hundred thirty-two".