64240448 has 14 divisors (see below), whose sum is σ = 127477266. Its totient is φ = 32120192.

The previous prime is 64240441. The next prime is 64240459. The reversal of 64240448 is 84404246.

It can be written as a sum of positive squares in only one way, i.e., 40347904 + 23892544 = 6352^2 + 4888^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64240441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501815 + ... + 501942.

It is an arithmetic number, because the mean of its divisors is an integer number (9105519).

Almost surely, 2^64240448 is an apocalyptic number.

It is an amenable number.

64240448 is a deficient number, since it is larger than the sum of its proper divisors (63236818).

64240448 is a wasteful number, since it uses less digits than its factorization.

64240448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003769 (or 1003759 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

The square root of 64240448 is about 8015.0139114040. The cubic root of 64240448 is about 400.5003073039.

The spelling of 64240448 in words is "sixty-four million, two hundred forty thousand, four hundred forty-eight".