238105656 has 80 divisors (see below), whose sum is σ = 685010040. Its totient is φ = 77215680.

The previous prime is 238105607. The next prime is 238105661. The reversal of 238105656 is 656501832.

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

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 238105656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19011 + ... + 28941.

Almost surely, 2^238105656 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 238105656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342505020).

238105656 is an abundant number, since it is smaller than the sum of its proper divisors (446904384).

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

238105656 is a wasteful number, since it uses less digits than its factorization.

238105656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9986 (or 9973 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 238105656 is about 15430.6725712135. The cubic root of 238105656 is about 619.8071339058.

The spelling of 238105656 in words is "two hundred thirty-eight million, one hundred five thousand, six hundred fifty-six".