50658640 has 60 divisors (see below), whose sum is σ = 125359164. Its totient is φ = 18972672.

The previous prime is 50658637. The next prime is 50658653. The reversal of 50658640 is 4685605.

It can be written as a sum of positive squares in 6 ways, for example, as 1882384 + 48776256 = 1372^2 + 6984^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 50658596 and 50658605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 262384 + ... + 262576.

Almost surely, 2^50658640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50658640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62679582).

50658640 is an abundant number, since it is smaller than the sum of its proper divisors (74700524).

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

50658640 is a wasteful number, since it uses less digits than its factorization.

50658640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 50658640 is about 7117.4883210301. The cubic root of 50658640 is about 370.0137321419.

The spelling of 50658640 in words is "fifty million, six hundred fifty-eight thousand, six hundred forty".