50278866 has 64 divisors (see below), whose sum is σ = 114998400. Its totient is φ = 14515200.

The previous prime is 50278853. The next prime is 50278867. The reversal of 50278866 is 66887205.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (50278867) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208506 + ... + 208746.

It is an arithmetic number, because the mean of its divisors is an integer number (1796850).

Almost surely, 2^50278866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50278866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57499200).

50278866 is an abundant number, since it is smaller than the sum of its proper divisors (64719534).

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

50278866 is a wasteful number, since it uses less digits than its factorization.

50278866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 50278866 is about 7090.7591977164. The cubic root of 50278866 is about 369.0867812432.

The spelling of 50278866 in words is "fifty million, two hundred seventy-eight thousand, eight hundred sixty-six".