49128586 has 8 divisors (see below), whose sum is σ = 79361604. Its totient is φ = 22674720.

The previous prime is 49128571. The next prime is 49128587. The reversal of 49128586 is 68582194.

It is a happy number.

49128586 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 39300361 + 9828225 = 6269^2 + 3135^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (49128587) 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 3 ways as a sum of consecutive naturals, for example, 944755 + ... + 944806.

Almost surely, 2^49128586 is an apocalyptic number.

49128586 is a deficient number, since it is larger than the sum of its proper divisors (30233018).

49128586 is a wasteful number, since it uses less digits than its factorization.

49128586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889576.

The product of its digits is 138240, while the sum is 43.

The square root of 49128586 is about 7009.1786965378. The cubic root of 49128586 is about 366.2503835801.

The spelling of 49128586 in words is "forty-nine million, one hundred twenty-eight thousand, five hundred eighty-six".