7211440828 has 6 divisors (see below), whose sum is σ = 12620021456. Its totient is φ = 3605720412.

The previous prime is 7211440799. The next prime is 7211440829. The reversal of 7211440828 is 8280441127.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7211440829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 901430100 + ... + 901430107.

Almost surely, 2^7211440828 is an apocalyptic number.

It is an amenable number.

7211440828 is a deficient number, since it is larger than the sum of its proper divisors (5408580628).

7211440828 is a wasteful number, since it uses less digits than its factorization.

7211440828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802860211 (or 1802860209 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 7211440828 is about 84920.2027081895. The cubic root of 7211440828 is about 1932.0010055477.

The spelling of 7211440828 in words is "seven billion, two hundred eleven million, four hundred forty thousand, eight hundred twenty-eight".