470138538 has 16 divisors (see below), whose sum is σ = 981158976. Its totient is φ = 149899200.

The previous prime is 470138497. The next prime is 470138569. The reversal of 470138538 is 835831074.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 470138496 and 470138505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1703263 + ... + 1703538.

It is an arithmetic number, because the mean of its divisors is an integer number (61322436).

Almost surely, 2^470138538 is an apocalyptic number.

470138538 is an abundant number, since it is smaller than the sum of its proper divisors (511020438).

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

470138538 is a wasteful number, since it uses less digits than its factorization.

470138538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3406829.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 470138538 is about 21682.6782939747. The cubic root of 470138538 is about 777.5743944419.

The spelling of 470138538 in words is "four hundred seventy million, one hundred thirty-eight thousand, five hundred thirty-eight".