238985470 has 32 divisors (see below), whose sum is σ = 437088960. Its totient is φ = 94068480.

The previous prime is 238985431. The next prime is 238985497. The reversal of 238985470 is 74589832.

It is a super-2 number, since 2×238985470² = 114228109742241800, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 238985470.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233560 + ... + 234580.

It is an arithmetic number, because the mean of its divisors is an integer number (13659030).

Almost surely, 2^238985470 is an apocalyptic number.

238985470 is a deficient number, since it is larger than the sum of its proper divisors (198103490).

238985470 is a wasteful number, since it uses less digits than its factorization.

238985470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 238985470 is about 15459.1548928135. The cubic root of 238985470 is about 620.5696031412.

The spelling of 238985470 in words is "two hundred thirty-eight million, nine hundred eighty-five thousand, four hundred seventy".