49185140 has 12 divisors (see below), whose sum is σ = 103288836. Its totient is φ = 19674048.

The previous prime is 49185119. The next prime is 49185151. The reversal of 49185140 is 4158194.

49185140 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 9897316 + 39287824 = 3146^2 + 6268^2 .

It is a junction number, because it is equal to n+sod(n) for n = 49185097 and 49185106.

It is a congruent number.

It is an unprimeable number.

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, 1229609 + ... + 1229648.

It is an arithmetic number, because the mean of its divisors is an integer number (8607403).

Almost surely, 2^49185140 is an apocalyptic number.

It is an amenable number.

49185140 is an abundant number, since it is smaller than the sum of its proper divisors (54103696).

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

49185140 is a wasteful number, since it uses less digits than its factorization.

49185140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2459266 (or 2459264 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 49185140 is about 7013.2118177052. The cubic root of 49185140 is about 366.3908651416.

The spelling of 49185140 in words is "forty-nine million, one hundred eighty-five thousand, one hundred forty".