1252217382 has 128 divisors (see below), whose sum is σ = 3138186240. Its totient is φ = 328458240.

The previous prime is 1252217377. The next prime is 1252217383. The reversal of 1252217382 is 2837122521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252217383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 578382 + ... + 580542.

It is an arithmetic number, because the mean of its divisors is an integer number (24517080).

Almost surely, 2^1252217382 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1252217382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1569093120).

1252217382 is an abundant number, since it is smaller than the sum of its proper divisors (1885968858).

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

1252217382 is a wasteful number, since it uses less digits than its factorization.

1252217382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238.

The product of its digits is 13440, while the sum is 33.

The square root of 1252217382 is about 35386.6836818598. The cubic root of 1252217382 is about 1077.8539293776.

The spelling of 1252217382 in words is "one billion, two hundred fifty-two million, two hundred seventeen thousand, three hundred eighty-two".