238697136 has 120 divisors (see below), whose sum is σ = 711878544. Its totient is φ = 74403840.

The previous prime is 238697099. The next prime is 238697143. The reversal of 238697136 is 631796832.

238697136 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 238697091 and 238697100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 687715 + ... + 688061.

Almost surely, 2^238697136 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 238697136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355939272).

238697136 is an abundant number, since it is smaller than the sum of its proper divisors (473181408).

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

238697136 is a wasteful number, since it uses less digits than its factorization.

238697136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659 (or 650 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 238697136 is about 15449.8264067918. The cubic root of 238697136 is about 620.3199320016.

The spelling of 238697136 in words is "two hundred thirty-eight million, six hundred ninety-seven thousand, one hundred thirty-six".