238287290 has 32 divisors (see below), whose sum is σ = 436230144. Its totient is φ = 93703680.

The previous prime is 238287277. The next prime is 238287293. The reversal of 238287290 is 92782832.

It is not an unprimeable number, because it can be changed into a prime (238287293) 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, 161255 + ... + 162725.

It is an arithmetic number, because the mean of its divisors is an integer number (13632192).

Almost surely, 2^238287290 is an apocalyptic number.

238287290 is a deficient number, since it is larger than the sum of its proper divisors (197942854).

238287290 is a wasteful number, since it uses less digits than its factorization.

238287290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 238287290 is about 15436.5569347572. The cubic root of 238287290 is about 619.9646962208.

The spelling of 238287290 in words is "two hundred thirty-eight million, two hundred eighty-seven thousand, two hundred ninety".