538430 has 16 divisors (see below), whose sum is σ = 1011744. Its totient is φ = 205920.

The previous prime is 538423. The next prime is 538457. The reversal of 538430 is 34835.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 538396 and 538405.

It is a congruent number.

It is an unprimeable number.

538430 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 941 + ... + 1400.

It is an arithmetic number, because the mean of its divisors is an integer number (63234).

2⁵³⁸⁴³⁰ is an apocalyptic number.

538430 is a deficient number, since it is larger than the sum of its proper divisors (473314).

538430 is a wasteful number, since it uses less digits than its factorization.

538430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 538430 is about 733.7778955515. Note that the first 3 decimals coincide. The cubic root of 538430 is about 81.3535327118.

The spelling of 538430 in words is "five hundred thirty-eight thousand, four hundred thirty".