1322085240 has 512 divisors, whose sum is σ = 5441126400. Its totient is φ = 282175488.

The previous prime is 1322085199. The next prime is 1322085251. The reversal of 1322085240 is 425802231.

1322085240 is a `hidden beast` number, since 132 + 2 + 0 + 8 + 524 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 10410057 + ... + 10410183.

It is an arithmetic number, because the mean of its divisors is an integer number (10627200).

Almost surely, 2^1322085240 is an apocalyptic number.

1322085240 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 1322085240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2720563200).

1322085240 is an abundant number, since it is smaller than the sum of its proper divisors (4119041160).

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

1322085240 is a wasteful number, since it uses less digits than its factorization.

1322085240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 1322085240 is about 36360.4900957069. The cubic root of 1322085240 is about 1097.5386398186.

Adding to 1322085240 its reverse (425802231), we get a palindrome (1747887471).

The spelling of 1322085240 in words is "one billion, three hundred twenty-two million, eighty-five thousand, two hundred forty".