49128650 has 12 divisors (see below), whose sum is σ = 91379382. Its totient is φ = 19651440.

The previous prime is 49128647. The next prime is 49128659. The reversal of 49128650 is 5682194.

It can be written as a sum of positive squares in 3 ways, for example, as 32228329 + 16900321 = 5677^2 + 4111^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 49128650.

It is not an unprimeable number, because it can be changed into a prime (49128659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 491237 + ... + 491336.

Almost surely, 2^49128650 is an apocalyptic number.

49128650 is a deficient number, since it is larger than the sum of its proper divisors (42250732).

49128650 is a wasteful number, since it uses less digits than its factorization.

49128650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982585 (or 982580 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 49128650 is about 7009.1832619785. The cubic root of 49128650 is about 366.2505426186.

The spelling of 49128650 in words is "forty-nine million, one hundred twenty-eight thousand, six hundred fifty".