1321822080 has 192 divisors, whose sum is σ = 4833270000. Its totient is φ = 331726848.

The previous prime is 1321822057. The next prime is 1321822087. The reversal of 1321822080 is 802281231.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×1321822080² = 3494427222351052800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321822087) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91171 + ... + 104669.

Almost surely, 2^1321822080 is an apocalyptic number.

1321822080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1321822080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2416635000).

1321822080 is an abundant number, since it is smaller than the sum of its proper divisors (3511447920).

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

1321822080 is a wasteful number, since it uses less digits than its factorization.

1321822080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13541 (or 13526 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 1321822080 is about 36356.8711525071. The cubic root of 1321822080 is about 1097.4658135929.

The spelling of 1321822080 in words is "one billion, three hundred twenty-one million, eight hundred twenty-two thousand, eighty".