1322917680 has 480 divisors, whose sum is σ = 5121529344. Its totient is φ = 281014272.

The previous prime is 1322917633. The next prime is 1322917691. The reversal of 1322917680 is 867192231.

It is a super-2 number, since 2×1322917680² = 3500222376113164800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 18122124 + ... + 18122196.

Almost surely, 2^1322917680 is an apocalyptic number.

1322917680 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 1322917680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2560764672).

1322917680 is an abundant number, since it is smaller than the sum of its proper divisors (3798611664).

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

1322917680 is a wasteful number, since it uses less digits than its factorization.

1322917680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 1322917680 is about 36371.9353348155. The cubic root of 1322917680 is about 1097.7689435213.

The spelling of 1322917680 in words is "one billion, three hundred twenty-two million, nine hundred seventeen thousand, six hundred eighty".