1322728847 has 8 divisors (see below), whose sum is σ = 1467434880. Its totient is φ = 1182099160.

The previous prime is 1322728811. The next prime is 1322728859. The reversal of 1322728847 is 7488272231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1322728847 - 2⁶ = 1322728783 is a prime.

It is a super-2 number, since 2×1322728847² = 3499223205371898818, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1322728798 and 1322728807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322721847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1018403 + ... + 1019700.

It is an arithmetic number, because the mean of its divisors is an integer number (183429360).

Almost surely, 2^1322728847 is an apocalyptic number.

1322728847 is a deficient number, since it is larger than the sum of its proper divisors (144706033).

1322728847 is a wasteful number, since it uses less digits than its factorization.

1322728847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038173.

The product of its digits is 301056, while the sum is 44.

The square root of 1322728847 is about 36369.3393808576. The cubic root of 1322728847 is about 1097.7167092642.

The spelling of 1322728847 in words is "one billion, three hundred twenty-two million, seven hundred twenty-eight thousand, eight hundred forty-seven".