507438 has 16 divisors (see below), whose sum is σ = 1127760. Its totient is φ = 169128.

The previous prime is 507431. The next prime is 507461. The reversal of 507438 is 834705.

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

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (507431) by changing a digit.

507438 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4645 + ... + 4752.

It is an arithmetic number, because the mean of its divisors is an integer number (70485).

2⁵⁰⁷⁴³⁸ is an apocalyptic number.

507438 is an abundant number, since it is smaller than the sum of its proper divisors (620322).

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

507438 is a wasteful number, since it uses less digits than its factorization.

507438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9408 (or 9402 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 507438 is about 712.3468256404. The cubic root of 507438 is about 79.7616866224.

The spelling of 507438 in words is "five hundred seven thousand, four hundred thirty-eight".