2928322381 has 4 divisors (see below), whose sum is σ = 2933676352. Its totient is φ = 2922968412.

The previous prime is 2928322361. The next prime is 2928322399. The reversal of 2928322381 is 1832238292.

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.

It is a cyclic number.

It is not a de Polignac number, because 2928322381 - 2¹¹ = 2928320333 is a prime.

It is a super-2 number, since 2×2928322381² = 17150143934131018322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2928322321) 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, 2676165 + ... + 2677258.

It is an arithmetic number, because the mean of its divisors is an integer number (733419088).

Almost surely, 2^2928322381 is an apocalyptic number.

It is an amenable number.

2928322381 is a deficient number, since it is larger than the sum of its proper divisors (5353971).

2928322381 is an equidigital number, since it uses as much as digits as its factorization.

2928322381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5353970.

The product of its digits is 82944, while the sum is 40.

The square root of 2928322381 is about 54113.9758380402. The cubic root of 2928322381 is about 1430.6705220981.

The spelling of 2928322381 in words is "two billion, nine hundred twenty-eight million, three hundred twenty-two thousand, three hundred eighty-one".