49687720 has 16 divisors (see below), whose sum is σ = 111797460. Its totient is φ = 19875072.

The previous prime is 49687711. The next prime is 49687723. The reversal of 49687720 is 2778694.

49687720 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 48972004 + 715716 = 6998^2 + 846^2 .

It is not an unprimeable number, because it can be changed into a prime (49687723) by changing a digit.

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, 621057 + ... + 621136.

Almost surely, 2^49687720 is an apocalyptic number.

49687720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49687720 is an abundant number, since it is smaller than the sum of its proper divisors (62109740).

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

49687720 is a wasteful number, since it uses less digits than its factorization.

49687720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242204 (or 1242200 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 49687720 is about 7048.9516951104. The cubic root of 49687720 is about 367.6345813416.

The spelling of 49687720 in words is "forty-nine million, six hundred eighty-seven thousand, seven hundred twenty".