64438348 has 72 divisors (see below), whose sum is σ = 133736400. Its totient is φ = 27046656.

The previous prime is 64438343. The next prime is 64438357. The reversal of 64438348 is 84383446.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 64438348.

It is not an unprimeable number, because it can be changed into a prime (64438343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 372390 + ... + 372562.

It is an arithmetic number, because the mean of its divisors is an integer number (1857450).

Almost surely, 2^64438348 is an apocalyptic number.

It is an amenable number.

64438348 is an abundant number, since it is smaller than the sum of its proper divisors (69298052).

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

64438348 is a wasteful number, since it uses less digits than its factorization.

64438348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 236 counting only the distinct ones).

The product of its digits is 221184, while the sum is 40.

The square root of 64438348 is about 8027.3499985985. The cubic root of 64438348 is about 400.9111479477.

The spelling of 64438348 in words is "sixty-four million, four hundred thirty-eight thousand, three hundred forty-eight".