238651290 has 48 divisors (see below), whose sum is σ = 634933728. Its totient is φ = 62159328.

The previous prime is 238651223. The next prime is 238651291. The reversal of 238651290 is 92156832.

It is not an unprimeable number, because it can be changed into a prime (238651291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26964 + ... + 34703.

It is an arithmetic number, because the mean of its divisors is an integer number (13227786).

Almost surely, 2^238651290 is an apocalyptic number.

238651290 is an abundant number, since it is smaller than the sum of its proper divisors (396282438).

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

238651290 is a wasteful number, since it uses less digits than its factorization.

238651290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61723 (or 61720 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 238651290 is about 15448.3426295509. The cubic root of 238651290 is about 620.2802149930.

The spelling of 238651290 in words is "two hundred thirty-eight million, six hundred fifty-one thousand, two hundred ninety".