322728213 has 16 divisors (see below), whose sum is σ = 439298496. Its totient is φ = 210693120.

The previous prime is 322728199. The next prime is 322728227. The reversal of 322728213 is 312827223.

It is an interprime number because it is at equal distance from previous prime (322728199) and next prime (322728227).

It is not a de Polignac number, because 322728213 - 2⁸ = 322727957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322728233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30133 + ... + 39413.

It is an arithmetic number, because the mean of its divisors is an integer number (27456156).

Almost surely, 2^322728213 is an apocalyptic number.

It is an amenable number.

322728213 is a deficient number, since it is larger than the sum of its proper divisors (116570283).

322728213 is a wasteful number, since it uses less digits than its factorization.

322728213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9524.

The product of its digits is 8064, while the sum is 30.

The square root of 322728213 is about 17964.6378477274. The cubic root of 322728213 is about 685.9287049752.

The spelling of 322728213 in words is "three hundred twenty-two million, seven hundred twenty-eight thousand, two hundred thirteen".