1390362272 has 144 divisors (see below), whose sum is σ = 3224891880. Its totient is φ = 584466432.

The previous prime is 1390362271. The next prime is 1390362287. The reversal of 1390362272 is 2722630931.

It can be written as a sum of positive squares in 4 ways, for example, as 939054736 + 451307536 = 30644^2 + 21244^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390362271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15622004 + ... + 15622092.

Almost surely, 2^1390362272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1390362272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1612445940).

1390362272 is an abundant number, since it is smaller than the sum of its proper divisors (1834529608).

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

1390362272 is a wasteful number, since it uses less digits than its factorization.

1390362272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 1390362272 is about 37287.5618940150. The cubic root of 1390362272 is about 1116.1159765221.

The spelling of 1390362272 in words is "one billion, three hundred ninety million, three hundred sixty-two thousand, two hundred seventy-two".