50786640 has 60 divisors (see below), whose sum is σ = 170560884. Its totient is φ = 13542912.

The previous prime is 50786623. The next prime is 50786641. The reversal of 50786640 is 4668705.

It is a happy number.

50786640 is a `hidden beast` number, since 5 + 0 + 7 + 8 + 6 + 640 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 35856144 + 14930496 = 5988^2 + 3864^2 .

It is a tau number, because it is divible by the number of its divisors (60).

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 = 50786595 and 50786604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50786641) by changing a digit.

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, 34549 + ... + 35988.

Almost surely, 2^50786640 is an apocalyptic number.

It is an amenable number.

50786640 is an abundant number, since it is smaller than the sum of its proper divisors (119774244).

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

50786640 is a wasteful number, since it uses less digits than its factorization.

50786640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70556 (or 70547 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 50786640 is about 7126.4745842527. The cubic root of 50786640 is about 370.3251099162.

The spelling of 50786640 in words is "fifty million, seven hundred eighty-six thousand, six hundred forty".