821014072 has 16 divisors (see below), whose sum is σ = 1606332240. Its totient is φ = 392658816.

The previous prime is 821014069. The next prime is 821014079. The reversal of 821014072 is 270410128.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (821014079) by changing a digit.

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, 2230833 + ... + 2231200.

It is an arithmetic number, because the mean of its divisors is an integer number (100395765).

Almost surely, 2^821014072 is an apocalyptic number.

It is an amenable number.

821014072 is a deficient number, since it is larger than the sum of its proper divisors (785318168).

821014072 is a wasteful number, since it uses less digits than its factorization.

821014072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4462062 (or 4462058 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 821014072 is about 28653.3431208297. The cubic root of 821014072 is about 936.3758413454.

The spelling of 821014072 in words is "eight hundred twenty-one million, fourteen thousand, seventy-two".