238883887 has 16 divisors (see below), whose sum is σ = 265505184. Its totient is φ = 214896000.

The previous prime is 238883867. The next prime is 238883893. The reversal of 238883887 is 788388832.

It is a happy number.

It is not a de Polignac number, because 238883887 - 2¹⁹ = 238359599 is a prime.

It is a super-2 number, since 2×238883887² = 114131022936457538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238883807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133543 + ... + 135319.

It is an arithmetic number, because the mean of its divisors is an integer number (16594074).

Almost surely, 2^238883887 is an apocalyptic number.

238883887 is a deficient number, since it is larger than the sum of its proper divisors (26621297).

238883887 is a wasteful number, since it uses less digits than its factorization.

238883887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911 (or 1889 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 55.

The square root of 238883887 is about 15455.8690147141. The cubic root of 238883887 is about 620.4816643836.

The spelling of 238883887 in words is "two hundred thirty-eight million, eight hundred eighty-three thousand, eight hundred eighty-seven".