64241632 has 72 divisors (see below), whose sum is σ = 156609936. Its totient is φ = 25399296.

The previous prime is 64241609. The next prime is 64241633. The reversal of 64241632 is 23614246.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 64241632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64241633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37008 + ... + 38704.

It is an arithmetic number, because the mean of its divisors is an integer number (2175138).

Almost surely, 2^64241632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64241632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78304968).

64241632 is an abundant number, since it is smaller than the sum of its proper divisors (92368304).

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

64241632 is a wasteful number, since it uses less digits than its factorization.

64241632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740 (or 1719 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 64241632 is about 8015.0877724452. The cubic root of 64241632 is about 400.5027677966.

Adding to 64241632 its reverse (23614246), we get a palindrome (87855878).

The spelling of 64241632 in words is "sixty-four million, two hundred forty-one thousand, six hundred thirty-two".