7920213 has 32 divisors (see below), whose sum is σ = 12672000. Its totient is φ = 4395888.

The previous prime is 7920203. The next prime is 7920217. The reversal of 7920213 is 3120297.

It is not a de Polignac number, because 7920213 - 2⁶ = 7920149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7920217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44158 + ... + 44336.

It is an arithmetic number, because the mean of its divisors is an integer number (396000).

Almost surely, 2^7920213 is an apocalyptic number.

It is an amenable number.

7920213 is a deficient number, since it is larger than the sum of its proper divisors (4751787).

7920213 is a wasteful number, since it uses less digits than its factorization.

7920213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 7920213 is about 2814.2872987668. The cubic root of 7920213 is about 199.3328855993.

The spelling of 7920213 in words is "seven million, nine hundred twenty thousand, two hundred thirteen".