238631616 has 112 divisors (see below), whose sum is σ = 706099680. Its totient is φ = 79027200.

The previous prime is 238631609. The next prime is 238631623. The reversal of 238631616 is 616136832.

238631616 is a `hidden beast` number, since 2 + 3 + 8 + 6 + 31 + 616 = 666.

It is an interprime number because it is at equal distance from previous prime (238631609) and next prime (238631623).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340066 + ... + 340766.

Almost surely, 2^238631616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238631616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353049840).

238631616 is an abundant number, since it is smaller than the sum of its proper divisors (467468064).

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

238631616 is a wasteful number, since it uses less digits than its factorization.

238631616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919 (or 903 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 238631616 is about 15447.7058490897. The cubic root of 238631616 is about 620.2631695816.

The spelling of 238631616 in words is "two hundred thirty-eight million, six hundred thirty-one thousand, six hundred sixteen".