15330640 has 40 divisors (see below), whose sum is σ = 38388168. Its totient is φ = 5660160.

The previous prime is 15330629. The next prime is 15330641. The reversal of 15330640 is 4603351.

It can be written as a sum of positive squares in 4 ways, for example, as 2742336 + 12588304 = 1656^2 + 3548^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15330641) 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 7 ways as a sum of consecutive naturals, for example, 6331 + ... + 8410.

Almost surely, 2^15330640 is an apocalyptic number.

15330640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15330640 is an abundant number, since it is smaller than the sum of its proper divisors (23057528).

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

15330640 is a wasteful number, since it uses less digits than its factorization.

15330640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14767 (or 14761 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 15330640 is about 3915.4361187485. The cubic root of 15330640 is about 248.4201169093.

Adding to 15330640 its reverse (4603351), we get a palindrome (19933991).

The spelling of 15330640 in words is "fifteen million, three hundred thirty thousand, six hundred forty".