238585420 has 12 divisors (see below), whose sum is σ = 501029424. Its totient is φ = 95434160.

The previous prime is 238585379. The next prime is 238585423. The reversal of 238585420 is 24585832.

It is a self number, because there is not a number n which added to its sum of digits gives 238585420.

It is not an unprimeable number, because it can be changed into a prime (238585423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5964616 + ... + 5964655.

It is an arithmetic number, because the mean of its divisors is an integer number (41752452).

Almost surely, 2^238585420 is an apocalyptic number.

238585420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238585420 is an abundant number, since it is smaller than the sum of its proper divisors (262444004).

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

238585420 is a wasteful number, since it uses less digits than its factorization.

238585420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11929280 (or 11929278 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 37.

The square root of 238585420 is about 15446.2105385107. The cubic root of 238585420 is about 620.2231420179.

The spelling of 238585420 in words is "two hundred thirty-eight million, five hundred eighty-five thousand, four hundred twenty".