1016721232 has 20 divisors (see below), whose sum is σ = 1971783520. Its totient is φ = 507873888.

The previous prime is 1016721163. The next prime is 1016721241. The reversal of 1016721232 is 2321276101.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1016721197 and 1016721206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12882 + ... + 46897.

It is an arithmetic number, because the mean of its divisors is an integer number (98589176).

Almost surely, 2^1016721232 is an apocalyptic number.

It is an amenable number.

1016721232 is a deficient number, since it is larger than the sum of its proper divisors (955062288).

1016721232 is a wasteful number, since it uses less digits than its factorization.

1016721232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60850 (or 60844 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1016721232 is about 31886.0664240668. The cubic root of 1016721232 is about 1005.5429627953.

Adding to 1016721232 its reverse (2321276101), we get a palindrome (3337997333).

The spelling of 1016721232 in words is "one billion, sixteen million, seven hundred twenty-one thousand, two hundred thirty-two".