238334390 has 64 divisors (see below), whose sum is σ = 533257344. Its totient is φ = 74815488.

The previous prime is 238334387. The next prime is 238334399. The reversal of 238334390 is 93433832.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 238334390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238334399) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41324 + ... + 46736.

It is an arithmetic number, because the mean of its divisors is an integer number (8332146).

Almost surely, 2^238334390 is an apocalyptic number.

238334390 is an abundant number, since it is smaller than the sum of its proper divisors (294922954).

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

238334390 is a wasteful number, since it uses less digits than its factorization.

238334390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5481.

The product of its (nonzero) digits is 46656, while the sum is 35.

The square root of 238334390 is about 15438.0824586475. The cubic root of 238334390 is about 620.0055410535.

The spelling of 238334390 in words is "two hundred thirty-eight million, three hundred thirty-four thousand, three hundred ninety".