238978605 has 16 divisors (see below), whose sum is σ = 404858304. Its totient is φ = 119957760.

The previous prime is 238978591. The next prime is 238978631. The reversal of 238978605 is 506879832.

238978605 = 1173² + 1174² + ... + 1325².

It is not a de Polignac number, because 238978605 - 2⁹ = 238978093 is a prime.

It is a super-2 number, since 2×238978605² = 114221547295492050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 468331 + ... + 468840.

It is an arithmetic number, because the mean of its divisors is an integer number (25303644).

Almost surely, 2^238978605 is an apocalyptic number.

It is an amenable number.

238978605 is a deficient number, since it is larger than the sum of its proper divisors (165879699).

238978605 is a wasteful number, since it uses less digits than its factorization.

238978605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937196.

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 238978605 is about 15458.9328545020. The cubic root of 238978605 is about 620.5636610071.

The spelling of 238978605 in words is "two hundred thirty-eight million, nine hundred seventy-eight thousand, six hundred five".