7021396 has 12 divisors (see below), whose sum is σ = 12333748. Its totient is φ = 3497472.

The previous prime is 7021381. The next prime is 7021423. The reversal of 7021396 is 6931207.

It can be written as a sum of positive squares in 2 ways, for example, as 1795600 + 5225796 = 1340^2 + 2286^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2061 + ... + 4276.

Almost surely, 2^7021396 is an apocalyptic number.

It is an amenable number.

7021396 is a deficient number, since it is larger than the sum of its proper divisors (5312352).

7021396 is a wasteful number, since it uses less digits than its factorization.

7021396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6618 (or 6616 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 7021396 is about 2649.7916899258. The cubic root of 7021396 is about 191.4878203981.

The spelling of 7021396 in words is "seven million, twenty-one thousand, three hundred ninety-six".