1322828400 has 120 divisors (see below), whose sum is σ = 4246605184. Its totient is φ = 351993600.

The previous prime is 1322828383. The next prime is 1322828413. The reversal of 1322828400 is 48282231.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 756327 + ... + 758073.

Almost surely, 2^1322828400 is an apocalyptic number.

1322828400 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 1322828400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2123302592).

1322828400 is an abundant number, since it is smaller than the sum of its proper divisors (2923776784).

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

1322828400 is a wasteful number, since it uses less digits than its factorization.

1322828400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399 (or 2388 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 1322828400 is about 36370.7079942087. The cubic root of 1322828400 is about 1097.7442478511.

The spelling of 1322828400 in words is "one billion, three hundred twenty-two million, eight hundred twenty-eight thousand, four hundred".