538406 has 8 divisors (see below), whose sum is σ = 881064. Its totient is φ = 244720.

The previous prime is 538399. The next prime is 538411. The reversal of 538406 is 604835.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12215 + ... + 12258.

It is an arithmetic number, because the mean of its divisors is an integer number (110133).

2⁵³⁸⁴⁰⁶ is an apocalyptic number.

538406 is a deficient number, since it is larger than the sum of its proper divisors (342658).

538406 is a wasteful number, since it uses less digits than its factorization.

538406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24486.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 538406 is about 733.7615416469. The cubic root of 538406 is about 81.3523239420.

The spelling of 538406 in words is "five hundred thirty-eight thousand, four hundred six".