238878507 has 32 divisors (see below), whose sum is σ = 384376320. Its totient is φ = 128908800.

The previous prime is 238878503. The next prime is 238878511. The reversal of 238878507 is 705878832.

It is an interprime number because it is at equal distance from previous prime (238878503) and next prime (238878511).

It is not a de Polignac number, because 238878507 - 2² = 238878503 is a prime.

It is a super-3 number, since 3×238878507³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (238878503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159253 + ... + 160745.

It is an arithmetic number, because the mean of its divisors is an integer number (12011760).

Almost surely, 2^238878507 is an apocalyptic number.

238878507 is a deficient number, since it is larger than the sum of its proper divisors (145497813).

238878507 is a wasteful number, since it uses less digits than its factorization.

238878507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923.

The product of its (nonzero) digits is 752640, while the sum is 48.

The square root of 238878507 is about 15455.6949698161. The cubic root of 238878507 is about 620.4770063097.

The spelling of 238878507 in words is "two hundred thirty-eight million, eight hundred seventy-eight thousand, five hundred seven".