64247232 has 84 divisors (see below), whose sum is σ = 197769480. Its totient is φ = 18353664.

The previous prime is 64247201. The next prime is 64247273. The reversal of 64247232 is 23274246.

It is a tau number, because it is divible by the number of its divisors (84).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 64247232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5994 + ... + 12822.

Almost surely, 2^64247232 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 64247232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98884740).

64247232 is an abundant number, since it is smaller than the sum of its proper divisors (133522248).

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

64247232 is a wasteful number, since it uses less digits than its factorization.

64247232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6858 (or 6841 counting only the distinct ones).

The product of its digits is 16128, while the sum is 30.

The square root of 64247232 is about 8015.4371059849. The cubic root of 64247232 is about 400.5144048522.

It can be divided in two parts, 642 and 47232, that added together give a palindrome (47874).

The spelling of 64247232 in words is "sixty-four million, two hundred forty-seven thousand, two hundred thirty-two".