502840238 has 4 divisors (see below), whose sum is σ = 754260360. Its totient is φ = 251420118.

The previous prime is 502840231. The next prime is 502840241. The reversal of 502840238 is 832048205.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 832048205 = 5 ⋅166409641.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (502840231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125710058 + ... + 125710061.

It is an arithmetic number, because the mean of its divisors is an integer number (188565090).

Almost surely, 2^502840238 is an apocalyptic number.

502840238 is a deficient number, since it is larger than the sum of its proper divisors (251420122).

502840238 is a wasteful number, since it uses less digits than its factorization.

502840238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251420121.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 502840238 is about 22424.0994913954. The cubic root of 502840238 is about 795.2005548630.

The spelling of 502840238 in words is "five hundred two million, eight hundred forty thousand, two hundred thirty-eight".