1322730810 has 80 divisors (see below), whose sum is σ = 3565368576. Its totient is φ = 351866592.

The previous prime is 1322730791. The next prime is 1322730881. The reversal of 1322730810 is 180372231.

It is a super-2 number, since 2×1322730810² = 3499233591446512200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 373267 + ... + 376793.

Almost surely, 2^1322730810 is an apocalyptic number.

1322730810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1322730810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1782684288).

1322730810 is an abundant number, since it is smaller than the sum of its proper divisors (2242637766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1322730810 is a wasteful number, since it uses less digits than its factorization.

1322730810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4009 (or 4000 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1322730810 is about 36369.3663678651. The cubic root of 1322730810 is about 1097.7172522873.

The spelling of 1322730810 in words is "one billion, three hundred twenty-two million, seven hundred thirty thousand, eight hundred ten".