65021232 has 40 divisors (see below), whose sum is σ = 170346240. Its totient is φ = 21367360.

The previous prime is 65021183. The next prime is 65021237. The reversal of 65021232 is 23212056.

It is a super-2 number, since 2×65021232² = 8455521221595648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65021199 and 65021208.

It is not an unprimeable number, because it can be changed into a prime (65021237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6132 + ... + 12947.

It is an arithmetic number, because the mean of its divisors is an integer number (4258656).

Almost surely, 2^65021232 is an apocalyptic number.

It is an amenable number.

65021232 is an abundant number, since it is smaller than the sum of its proper divisors (105325008).

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

65021232 is a wasteful number, since it uses less digits than its factorization.

65021232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19161 (or 19155 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 65021232 is about 8063.5743935305. The cubic root of 65021232 is about 402.1163495799.

Adding to 65021232 its reverse (23212056), we get a palindrome (88233288).

The spelling of 65021232 in words is "sixty-five million, twenty-one thousand, two hundred thirty-two".