1040015396 has 54 divisors (see below), whose sum is σ = 2159016930. Its totient is φ = 437079552.

The previous prime is 1040015393. The next prime is 1040015401. The reversal of 1040015396 is 6935100401.

It can be written as a sum of positive squares in 3 ways, for example, as 343583296 + 696432100 = 18536^2 + 26390^2 .

It is not an unprimeable number, because it can be changed into a prime (1040015393) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 549620 + ... + 551508.

It is an arithmetic number, because the mean of its divisors is an integer number (39981795).

Almost surely, 2^1040015396 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 1040015396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1079508465).

1040015396 is an abundant number, since it is smaller than the sum of its proper divisors (1119001534).

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

1040015396 is a wasteful number, since it uses less digits than its factorization.

1040015396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013 (or 1951 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 1040015396 is about 32249.2696971575. The cubic root of 1040015396 is about 1013.1644033475.

Adding to 1040015396 its reverse (6935100401), we get a palindrome (7975115797).

The spelling of 1040015396 in words is "one billion, forty million, fifteen thousand, three hundred ninety-six".