7628213 has 4 divisors (see below), whose sum is σ = 7644000. Its totient is φ = 7612428.

The previous prime is 7628209. The next prime is 7628221. The reversal of 7628213 is 3128267.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3128267 = 151 ⋅20717.

It is a cyclic number.

It is not a de Polignac number, because 7628213 - 2² = 7628209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7628293) 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 3 ways as a sum of consecutive naturals, for example, 7145 + ... + 8142.

It is an arithmetic number, because the mean of its divisors is an integer number (1911000).

Almost surely, 2^7628213 is an apocalyptic number.

It is an amenable number.

7628213 is a deficient number, since it is larger than the sum of its proper divisors (15787).

7628213 is a wasteful number, since it uses less digits than its factorization.

7628213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15786.

The product of its digits is 4032, while the sum is 29.

The square root of 7628213 is about 2761.9219757263. The cubic root of 7628213 is about 196.8525010990.

The spelling of 7628213 in words is "seven million, six hundred twenty-eight thousand, two hundred thirteen".