49820040 has 48 divisors (see below), whose sum is σ = 161916300. Its totient is φ = 13285248.

The previous prime is 49820039. The next prime is 49820059. The reversal of 49820040 is 4002894.

It can be written as a sum of positive squares in 2 ways, for example, as 43797924 + 6022116 = 6618^2 + 2454^2 .

It is a junction number, because it is equal to n+sod(n) for n = 49819986 and 49820013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68835 + ... + 69554.

Almost surely, 2^49820040 is an apocalyptic number.

49820040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49820040 is an abundant number, since it is smaller than the sum of its proper divisors (112096260).

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

49820040 is a wasteful number, since it uses less digits than its factorization.

49820040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138406 (or 138399 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 49820040 is about 7058.3312475400. The cubic root of 49820040 is about 367.9606329974.

The spelling of 49820040 in words is "forty-nine million, eight hundred twenty thousand, forty".