50138406 has 32 divisors (see below), whose sum is σ = 117974880. Its totient is φ = 15729408.

The previous prime is 50138399. The next prime is 50138411. The reversal of 50138406 is 60483105.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 50138406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26391 + ... + 28226.

It is an arithmetic number, because the mean of its divisors is an integer number (3686715).

Almost surely, 2^50138406 is an apocalyptic number.

50138406 is an abundant number, since it is smaller than the sum of its proper divisors (67836474).

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

50138406 is a wasteful number, since it uses less digits than its factorization.

50138406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54645 (or 54639 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 50138406 is about 7080.8478305920. The cubic root of 50138406 is about 368.7427647340.

The spelling of 50138406 in words is "fifty million, one hundred thirty-eight thousand, four hundred six".