64244232 has 128 divisors (see below), whose sum is σ = 194745600. Its totient is φ = 19505664.

The previous prime is 64244197. The next prime is 64244233. The reversal of 64244232 is 23244246.

64244232 is a `hidden beast` number, since 6 + 424 + 4 + 232 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is a junction number, because it is equal to n+sod(n) for n = 64244196 and 64244205.

It is not an unprimeable number, because it can be changed into a prime (64244233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 384613 + ... + 384779.

It is an arithmetic number, because the mean of its divisors is an integer number (1521450).

Almost surely, 2^64244232 is an apocalyptic number.

64244232 is the 4008-th decagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64244232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97372800).

64244232 is an abundant number, since it is smaller than the sum of its proper divisors (130501368).

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

64244232 is a wasteful number, since it uses less digits than its factorization.

64244232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332 (or 322 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 64244232 is about 8015.2499649106. The cubic root of 64244232 is about 400.5081707994.

Adding to 64244232 its reverse (23244246), we get a palindrome (87488478).

The spelling of 64244232 in words is "sixty-four million, two hundred forty-four thousand, two hundred thirty-two".