2015433540 has 36 divisors (see below), whose sum is σ = 6113482284. Its totient is φ = 537448896.

The previous prime is 2015433533. The next prime is 2015433547. The reversal of 2015433540 is 453345102.

It is an interprime number because it is at equal distance from previous prime (2015433533) and next prime (2015433547).

It can be written as a sum of positive squares in 2 ways, for example, as 1528966404 + 486467136 = 39102^2 + 22056^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (2015433547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5598247 + ... + 5598606.

Almost surely, 2^2015433540 is an apocalyptic number.

2015433540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2015433540 is an abundant number, since it is smaller than the sum of its proper divisors (4098048744).

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

2015433540 is a wasteful number, since it uses less digits than its factorization.

2015433540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11196868 (or 11196863 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 2015433540 is about 44893.5801646516. The cubic root of 2015433540 is about 1263.1535894974.

Adding to 2015433540 its reverse (453345102), we get a palindrome (2468778642).

The spelling of 2015433540 in words is "two billion, fifteen million, four hundred thirty-three thousand, five hundred forty".