65440232 has 32 divisors (see below), whose sum is σ = 144154080. Its totient is φ = 27456960.

The previous prime is 65440201. The next prime is 65440247. The reversal of 65440232 is 23204456.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27458 + ... + 29745.

It is an arithmetic number, because the mean of its divisors is an integer number (4504815).

Almost surely, 2^65440232 is an apocalyptic number.

It is an amenable number.

65440232 is an abundant number, since it is smaller than the sum of its proper divisors (78713848).

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

65440232 is a wasteful number, since it uses less digits than its factorization.

65440232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57233 (or 57229 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 65440232 is about 8089.5137060271. The cubic root of 65440232 is about 402.9782533157.

Adding to 65440232 its reverse (23204456), we get a palindrome (88644688).

The spelling of 65440232 in words is "sixty-five million, four hundred forty thousand, two hundred thirty-two".