15135240 has 32 divisors (see below), whose sum is σ = 45406080. Its totient is φ = 4036032.

The previous prime is 15135227. The next prime is 15135301. The reversal of 15135240 is 4253151.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 62944 + ... + 63183.

It is an arithmetic number, because the mean of its divisors is an integer number (1418940).

Almost surely, 2^15135240 is an apocalyptic number.

15135240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15135240 is an abundant number, since it is smaller than the sum of its proper divisors (30270840).

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

15135240 is a wasteful number, since it uses less digits than its factorization.

15135240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126141 (or 126137 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 15135240 is about 3890.4035780366. The cubic root of 15135240 is about 247.3601699693.

Adding to 15135240 its reverse (4253151), we get a palindrome (19388391).

The spelling of 15135240 in words is "fifteen million, one hundred thirty-five thousand, two hundred forty".