61587128 has 16 divisors (see below), whose sum is σ = 115560000. Its totient is φ = 30771136.

The previous prime is 61587109. The next prime is 61587139. The reversal of 61587128 is 82178516.

It is a junction number, because it is equal to n+sod(n) for n = 61587091 and 61587100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17588 + ... + 20796.

It is an arithmetic number, because the mean of its divisors is an integer number (7222500).

Almost surely, 2^61587128 is an apocalyptic number.

It is an amenable number.

61587128 is a deficient number, since it is larger than the sum of its proper divisors (53972872).

61587128 is a wasteful number, since it uses less digits than its factorization.

61587128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5614 (or 5610 counting only the distinct ones).

The product of its digits is 26880, while the sum is 38.

The square root of 61587128 is about 7847.7466829658. The cubic root of 61587128 is about 394.9086537691.

The spelling of 61587128 in words is "sixty-one million, five hundred eighty-seven thousand, one hundred twenty-eight".