49800138 has 16 divisors (see below), whose sum is σ = 100515360. Its totient is φ = 16447536.

The previous prime is 49800131. The next prime is 49800139. The reversal of 49800138 is 83100894.

It is a junction number, because it is equal to n+sod(n) for n = 49800099 and 49800108.

It is not an unprimeable number, because it can be changed into a prime (49800131) 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, 37420 + ... + 38727.

It is an arithmetic number, because the mean of its divisors is an integer number (6282210).

Almost surely, 2^49800138 is an apocalyptic number.

49800138 is an abundant number, since it is smaller than the sum of its proper divisors (50715222).

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

49800138 is a wasteful number, since it uses less digits than its factorization.

49800138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76261.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 49800138 is about 7056.9212833926. The cubic root of 49800138 is about 367.9116291034.

The spelling of 49800138 in words is "forty-nine million, eight hundred thousand, one hundred thirty-eight".