64161232 has 20 divisors (see below), whose sum is σ = 125596996. Its totient is φ = 31749120.

The previous prime is 64161221. The next prime is 64161239. The reversal of 64161232 is 23216146.

It can be written as a sum of positive squares in 2 ways, for example, as 19324816 + 44836416 = 4396^2 + 6696^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64161197 and 64161206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64161239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19119 + ... + 22222.

Almost surely, 2^64161232 is an apocalyptic number.

It is an amenable number.

64161232 is a deficient number, since it is larger than the sum of its proper divisors (61435764).

64161232 is a wasteful number, since it uses less digits than its factorization.

64161232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41446 (or 41440 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 64161232 is about 8010.0706613612. The cubic root of 64161232 is about 400.3356183221.

Adding to 64161232 its reverse (23216146), we get a palindrome (87377378).

The spelling of 64161232 in words is "sixty-four million, one hundred sixty-one thousand, two hundred thirty-two".