15135140 has 24 divisors (see below), whose sum is σ = 32524800. Its totient is φ = 5912928.

The previous prime is 15135121. The next prime is 15135143. The reversal of 15135140 is 4153151.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (15135143) 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, 7940 + ... + 9659.

It is an arithmetic number, because the mean of its divisors is an integer number (1355200).

Almost surely, 2^15135140 is an apocalyptic number.

15135140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15135140 is an abundant number, since it is smaller than the sum of its proper divisors (17389660).

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

15135140 is a wasteful number, since it uses less digits than its factorization.

15135140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17651 (or 17649 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 15135140 is about 3890.3907258783. The cubic root of 15135140 is about 247.3596251906.

Adding to 15135140 its reverse (4153151), we get a palindrome (19288291).

The spelling of 15135140 in words is "fifteen million, one hundred thirty-five thousand, one hundred forty".