238384930 has 32 divisors (see below), whose sum is σ = 507306240. Its totient is φ = 78912960.

The previous prime is 238384891. The next prime is 238384933. The reversal of 238384930 is 39483832.

238384930 = 83² + 84² + ... + 894².

It is a super-2 number, since 2×238384930² = 113654749702209800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (238384933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56686 + ... + 60745.

It is an arithmetic number, because the mean of its divisors is an integer number (15853320).

Almost surely, 2^238384930 is an apocalyptic number.

238384930 is an abundant number, since it is smaller than the sum of its proper divisors (268921310).

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

238384930 is a wasteful number, since it uses less digits than its factorization.

238384930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117474.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 238384930 is about 15439.7192331985. The cubic root of 238384930 is about 620.0493630486.

The spelling of 238384930 in words is "two hundred thirty-eight million, three hundred eighty-four thousand, nine hundred thirty".