49147128 has 32 divisors (see below), whose sum is σ = 136520400. Its totient is φ = 16382304.

The previous prime is 49147127. The next prime is 49147157. The reversal of 49147128 is 82174194.

49147128 is a `hidden beast` number, since 491 + 47 + 128 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 49147092 and 49147101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49147127) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 113551 + ... + 113982.

Almost surely, 2^49147128 is an apocalyptic number.

It is an amenable number.

49147128 is an abundant number, since it is smaller than the sum of its proper divisors (87373272).

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

49147128 is a wasteful number, since it uses less digits than its factorization.

49147128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227548 (or 227538 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 49147128 is about 7010.5012659581. The cubic root of 49147128 is about 366.2964542489.

The spelling of 49147128 in words is "forty-nine million, one hundred forty-seven thousand, one hundred twenty-eight".